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Helmets

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4 February 2007
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  1. In alt.rec.bicycles.recumbent on Thu, 08 Feb 2007 14:06:43 +0000

    Peter Clinch said:


    The evidence either way is far from perfect, but the evidence that they
    seriously improve your chances against serious accidents is IMHO fuller
    of holes, has failed to be as reproducible and doesn't fit with
    real-world population level studies.

    I think helmet fanciers would do a lot better to avoid saying "you
    will definitely die without it" and instead say "you'll probably be
    happier with it than without - if only because gravel rash on the
    skull is such a bad look!"

    Even "hey, it might help and that's good right?" is better than the
    easily disbelieved "it's going to save you, if you don't wear it
    you'll die" claims.

    No protective kit will save you from all damage. Once you realise that
    then it's a matter of how much damage you can avoid with reasonable
    certainty and for that all you have is statistics. The statistics seem
    to show that helmets aren't sure-fire preventatives, I am unsure as to
    where on the range from "don't bother" to "worth the hassle" they are.

    The key for me as to how important a person believes a cycle helmet is to
    prevent injury is whether or not they wear one when riding in a car. Head
    injuries are one of the biggest killers of car passengers in Australia -
    a country with mandatory seatbelt laws. But for some reason people who
    say helmets are vital on pushbikes refuse to wear them in cars....

    Zebee

  2. Joel joelw135atcomcast.net said:
    Buck said:

    On 2007-02-08 17:18:59 +0000, Joel <joelw135atcomcast.net> said:

    Quoted message said:
    Quoted message said:

    [email hidden] wrote:

    Quoted message said:
    Quoted message said:

    > I recently had a completely new (at least for me) experience: I wore
    > out a helmet. Or at least I think I wore it out: there's a crack in
    > the front of my trusty white Giro Atmos that I can't account for. The
    > helmet's four years old, so I'm just putting this crack down to
    > accumulated wear and tear.

    Quoted message said:
    Quoted message said:

    > So how is this new? Well, it's the first time I've ever replaced a
    > helmet before catastrophically destroying it through the medium of an
    > epic crash. In other words, I've finally had a helmet die of old age.

    Quoted message said:
    Quoted message said:

    > Who would have even thought such a thing possible?

    Quoted message said:
    Quoted message said:

    > So lately I've been doing some helmet shopping, during which I have
    > thought a lot-too much, perhaps-about helmets.

    Quoted message said:
    Quoted message said:

    > Chose a Bell; what the Hell?

    Quoted message said:
    Quoted message said:

    I am one of those pro helmet users, I hate having it on my head, but I
    know for fact in my case it works. I was riding my trike on a bike
    path/trail when i cam to a area of heavy brush and I was moving along
    at around 15-18 Mph. As I came around a turn directly in front of me
    was a car that I later found out was stolen. I tried my best to steer
    away, but I forgot in panic to lean into the turn. The trike and I
    flipped over and my head hit the ground real hard. After I regained my
    composure I got up and looked around, (to see if anyone saw this
    embarrassing moment) and felt my helmet was very loose. I took it off
    and found that the thin outer shell was scratched, but the inner foam
    shell was cracked all the way through. I had some nasty black and
    blues on my forehead where the helmet dug in, but everything including
    my trike was undamaged. But I guess I was just lucky. So no matter how
    much I hate the helmet I will continue to wear it.

    Quoted message said:
    Quoted message said:

    Joel

    Quoted message said:

    I got myself a Briko Twinner, which is pretty comfortable, luckily I
    have not had to rely upon
    it in an accident thus far.

    I found that he most comfortable helmet is the Bell Metropolis with the
    quick knob adjustment. I put it on and turn a knob which tightens around
    my head. Great when I wear a cap under the helmet.

    Joel- Hide quoted text -

    - Show quoted text -

    Have you used the accessories available for the Metro? The mirror's
    decent, and the raincover is really quite nice. I haven't tried the
    winterizing kit yet, though.

    *Flame war content: I choose to wear my helmet for two reasons. (Well,
    three, if you count looking cool and stylish...)
    One: in my municipality, cyclists under the age of 12 are required to
    wear them; while I am well beyond that age, my son will be riding in a
    couple of years, and I wish to encourage him to respect the local law,
    as silly as it may seem.
    Two: I could not get the glue for the mirror base and the headlamp
    mount to adhere properly to my forehead.

    Dan

  3. In alt.rec.bicycles.recumbent on 8 Feb 2007 11:45:40 -0800

    Dan B. said:

    Two: I could not get the glue for the mirror base and the headlamp
    mount to adhere properly to my forehead.

    Rivets... works every time.

    HAve you used a handlebar mirror? If so, what do you see as the pros
    and cons of bar vs helmet?

    I have a mirror on the Giro that's about 2" in diameter on a long thin
    stalk. (Came with the bike, no idea what the maker/model is.) I can
    easily see what's behind me although I think I need to find another
    one to put on the kerbside.

    I haven't tried helmet mirrors, better than bar ones, worse, or just
    personal preference?

    Zebee

  4. Buck said:
    Peter Clinch said:

    Like Curtis states, you've missed the point.

    Quoted message said:

    I don't think I have

    Well you just missed it again, and your monologue about helmet
    sceptics requiring 100% certainty of everything was a fine
    illustration of that: you're just misrepresenting things, and
    whether intentionally or not it's still misrepresentation and it's
    still missing the point.

    Quoted message said:

    I just have not agreed with any one point
    of view, which is a different thing altogether.

    This is not the point: further evidence you've missed it. It's not
    about who you agree with, in this case it's whether statements made
    as fact can be backed up with credible evidence to support that
    degree of confidence. That the incidence of fractured skulls in
    sideways falls onto hard ground is 90-100% has been backed up with
    a couple of anecdotes and sides being weaker than tops of skulls
    (though not with any quantitative degree of how much). Think you'd
    get those numbers published in a medical journal? Even with the
    hilariously poor peer reviewing that let the 88% protection from
    brain injuries through I say you can't do it. By all means prove
    me wrong, and open up your full data to scrutiny and see what a
    statistician has to say about it.

    That you imply I got to my personal set of opinions by just
    choosing a bandwagon to jump on and who I wanted to be seen
    agreeing with, rather than by independently assessing evidence
    about which I happen to agree on several points with some people,
    is frankly something I find rather insulting and disrespectful.

    It's one of those irregular verb things...

    I assess objectively without bias
    His opinions are entirely legitimised by hazily recalled experiences
    You jump onto bandwagons

    You appear to assume you must be clearly much better at assessing
    evidence than me. I actually suspect you're not quite as good at
    evidence based argument as you like to think. Your riposte to that
    might be it's not fair, or you don't think so, but that does not
    make it necessarily so. Argument needs more than "I think so" to
    be really convincing (even if it's enough for the person thinking
    it), but that's the bulk of what you've really come up with on the
    matter of whether the OP was fair to say a fractured skull was near
    certainty, or at /least/ 90%.

    Pete.
    --
    Peter Clinch Medical Physics IT Officer
    Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital
    Fax 44 1382 640177 Dundee DD1 9SY Scotland UK
    net [email hidden] http://www.dundee.ac.uk/~pjclinch/

  5. "Zebee Johnstone" <[email hidden]> wrote in message
    news:[email hidden]...

    Quoted message said:

    In alt.rec.bicycles.recumbent on 8 Feb 2007 11:45:40 -0800

    Dan B. said:

    Two: I could not get the glue for the mirror base and the headlamp
    mount to adhere properly to my forehead.

    Rivets... works every time.

    HAve you used a handlebar mirror? If so, what do you see as the pros
    and cons of bar vs helmet?

    I have a mirror on the Giro that's about 2" in diameter on a long thin
    stalk. (Came with the bike, no idea what the maker/model is.) I can
    easily see what's behind me although I think I need to find another
    one to put on the kerbside.

    I haven't tried helmet mirrors, better than bar ones, worse, or just
    personal preference?

    Zebee

    Your mirror sounds like a B&M Cyclestar. I have a pair on both of my bents.
    They come in two stem lengths and have both around the bar clamps and a plug
    style in the handlebar end style mount with each mirror. They are smaller,
    but adequate, than the Mirracycle type mirror (bar end plug only mount
    IIRC) they haven't suffered the cracked mount issues that I've had with a
    couple of the Mirracycles. I gave up on helmet mirrors because as I look for
    cars behind I tend to move my head so that I end up looking in the wrong
    place. Bar mirrors being stationary are always in the right place as long as
    I'm steering straight ahead.

    --
    Posted via a free Usenet account from http://www.teranews.com

  6. Zebee Johnstone said:

    No protective kit will save you from all damage. Once you realise that
    then it's a matter of how much damage you can avoid with reasonable
    certainty and for that all you have is statistics. The statistics seem
    to show that helmets aren't sure-fire preventatives, I am unsure as to
    where on the range from "don't bother" to "worth the hassle" they are.

    Well put.

    Quoted message said:

    The key for me as to how important a person believes a cycle helmet is to
    prevent injury is whether or not they wear one when riding in a car. Head
    injuries are one of the biggest killers of car passengers in Australia -
    a country with mandatory seatbelt laws. But for some reason people who
    say helmets are vital on pushbikes refuse to wear them in cars....

    And don't forget walking... UK pedestrians acquire slightly more
    serious injuries per unit distance than cyclists, and the rate of
    those being head injuries is higher too. As Buck's friend
    illustrated with his misfortune, you really /can/ fracture your
    skull out for a stroll.

    Pete.
    --
    Peter Clinch Medical Physics IT Officer
    Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital
    Fax 44 1382 640177 Dundee DD1 9SY Scotland UK
    net [email hidden] http://www.dundee.ac.uk/~pjclinch/

  7. Zebee Johnstone said:

    HAve you used a handlebar mirror? If so, what do you see as the pros
    and cons of bar vs helmet?

    Don't wera a helmet so no helmet mirror, but I have compared
    glasses mounted mirrors to bar mirrors (a B&M Cyclestar in my case).

    Quoted message said:

    I haven't tried helmet mirrors, better than bar ones, worse, or just
    personal preference?

    Personal preference I think. I know another Streetmachine owner
    who loves glasses mounted mirros while I found it a bit of a chore,
    but not for any reason I can actually pin down.

    One thing I will say is that OSS mounted mirrors are easier to get
    to work well than USS mounted mirrors, and some very simple mirrors
    work perfectly on OSS while USS seems to need something a bit more
    contrived. Having said that, that was based on "scorpion" bars
    rather than "hamster", and that makes life more mirror friendly
    because they stick out to the side more closer to the vision line.

    Pete.
    --
    Peter Clinch Medical Physics IT Officer
    Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital
    Fax 44 1382 640177 Dundee DD1 9SY Scotland UK
    net [email hidden] http://www.dundee.ac.uk/~pjclinch/

  8. Zebee Johnstone said:

    In alt.rec.bicycles.recumbent on 8 Feb 2007 11:45:40 -0800

    Dan B. said:

    Two: I could not get the glue for the mirror base and the headlamp
    mount to adhere properly to my forehead.

    Rivets... works every time.

    Couldn't find ones long enough.

    Quoted message said:


    HAve you used a handlebar mirror? If so, what do you see as the pros
    and cons of bar vs helmet?

    I have a mirror on the Giro that's about 2" in diameter on a long thin
    stalk. (Came with the bike, no idea what the maker/model is.) I can
    easily see what's behind me although I think I need to find another
    one to put on the kerbside.

    I haven't tried helmet mirrors, better than bar ones, worse, or just
    personal preference?

    Zebee

    I use bar-mounted mirrors on my 'bents; however, the fold-away helmet
    mounted mirror with the Metro is very nice for test rides, loaners,
    rental bikes, and suchlike.

    I prefer bar-mounted mirrors (one on each side), the helmet-mounted
    mirrors I've used seem to pick up more road vibration, rendering a
    rather psychedelic rear view on any rough bits of road. Although I
    haven't used them personally, I'd expect the same principle applies to
    the eyeglass-mounted stalked mirror systems as well.

    Again, though, if you're riding a bike not your own, it's nice to be
    able to flip down a little Borg-looking widget from your visor and
    have some rear visibility.

    Dan

  9. Dan B. said:
    Joel joelw135atcomcast.net said:
    Buck said:

    On 2007-02-08 17:18:59 +0000, Joel <joelw135atcomcast.net> said:
    > [email hidden] wrote:
    >> I recently had a completely new (at least for me) experience: I wore
    >> out a helmet. Or at least I think I wore it out: there's a crack in
    >> the front of my trusty white Giro Atmos that I can't account for. The
    >> helmet's four years old, so I'm just putting this crack down to
    >> accumulated wear and tear.
    >> So how is this new? Well, it's the first time I've ever replaced a
    >> helmet before catastrophically destroying it through the medium of an
    >> epic crash. In other words, I've finally had a helmet die of old age.
    >> Who would have even thought such a thing possible?
    >> So lately I've been doing some helmet shopping, during which I have
    >> thought a lot-too much, perhaps-about helmets.
    >> Chose a Bell; what the Hell?
    > I am one of those pro helmet users, I hate having it on my head, but I
    > know for fact in my case it works. I was riding my trike on a bike
    > path/trail when i cam to a area of heavy brush and I was moving along
    > at around 15-18 Mph. As I came around a turn directly in front of me
    > was a car that I later found out was stolen. I tried my best to steer
    > away, but I forgot in panic to lean into the turn. The trike and I
    > flipped over and my head hit the ground real hard. After I regained my
    > composure I got up and looked around, (to see if anyone saw this
    > embarrassing moment) and felt my helmet was very loose. I took it off
    > and found that the thin outer shell was scratched, but the inner foam
    > shell was cracked all the way through. I had some nasty black and
    > blues on my forehead where the helmet dug in, but everything including
    > my trike was undamaged. But I guess I was just lucky. So no matter how
    > much I hate the helmet I will continue to wear it.
    > Joel
    I got myself a Briko Twinner, which is pretty comfortable, luckily I
    have not had to rely upon
    it in an accident thus far.


    I found that he most comfortable helmet is the Bell Metropolis with the
    quick knob adjustment. I put it on and turn a knob which tightens around
    my head. Great when I wear a cap under the helmet.

    Joel- Hide quoted text -

    - Show quoted text -

    Have you used the accessories available for the Metro? The mirror's
    decent, and the raincover is really quite nice. I haven't tried the
    winterizing kit yet, though.

    *Flame war content: I choose to wear my helmet for two reasons. (Well,
    three, if you count looking cool and stylish...)
    One: in my municipality, cyclists under the age of 12 are required to
    wear them; while I am well beyond that age, my son will be riding in a
    couple of years, and I wish to encourage him to respect the local law,
    as silly as it may seem.
    Two: I could not get the glue for the mirror base and the headlamp
    mount to adhere properly to my forehead.

    Dan


    I have used the rain cover, but I plan to get the winter kit for next
    year.I have two mirrors on my trike so the helmet mount is not necessary.

  10. In alt.rec.bicycles.recumbent on Thu, 08 Feb 2007 20:54:27 +0000

    Peter Clinch said:


    One thing I will say is that OSS mounted mirrors are easier to get
    to work well than USS mounted mirrors, and some very simple mirrors
    work perfectly on OSS while USS seems to need something a bit more
    contrived. Having said that, that was based on "scorpion" bars
    rather than "hamster", and that makes life more mirror friendly
    because they stick out to the side more closer to the vision line.

    I can see that!

    The Giro has tweener bars, and the mirror I have has a long stalk, so
    getting a view of the road instead of my elbows is easy.

    Now, if only I could manage that on the motorcycle....

    Zebee

  11. In alt.rec.bicycles.recumbent on 8 Feb 2007 12:57:14 -0800

    Dan B. said:


    Again, though, if you're riding a bike not your own, it's nice to be
    able to flip down a little Borg-looking widget from your visor and
    have some rear visibility.

    Dunno why more don't use them.

    Was on a group ride a while back and only the "odd bikes" were using
    mirrors. My bent and a bunch of people on folders.

    Then a bod on a hybrid turned up and he had one, blowing my theory out
    of the water 🙂 He said he'd only recently added it and wondered why
    he hadn't done so earlier.

    Most of the others on the ride were using some variety of flat bar
    rather than drops so mirrors wouldn't have been too hard. I seldom
    see any on my commute, maybe one helmet mirror every couple of months.

    Never occurred to me to use one when I was commuting on an upright so
    perhaps it's just exposure.

    Zebee

  12. Peter Clinch said:

    You appear to assume you must be clearly much better at assessing
    evidence than me. I actually suspect you're not quite as good at
    evidence based argument as you like to think. Your riposte to that
    might be it's not fair, or you don't think so, but that does not make
    it necessarily so. Argument needs more than "I think so" to be really
    convincing (even if it's enough for the person thinking it), but that's
    the bulk of what you've really come up with on the matter of whether
    the OP was fair to say a fractured skull was near certainty, or at
    /least/ 90%.

    Pete.

    I think you have completely missed my main point, in that I make my own
    decissions based on my
    own criteria to take my own responsibility, I have no interest in
    getting published in medical
    journals.

    I will continue to do so until such times as cohesive research is
    actually carried out, until then
    both sides can use emotive issues or say things like "your assesment is
    rubbish until you go and do the same without a helmet to prove you will
    die/crack your skull/be crippled, yada yada".

    And I still tend on the side of the OP.
    --
    Three wheels good, two wheels ok

    www.catrike.co.uk

  13. Buck said:

    I think you have completely missed my main point, in that I make my
    own decissions based on my own criteria to take my own
    responsibility, I have no interest in getting published in medical
    journals.

    So your "choosing not to accept bias" is, really, just choosing your own
    bias (and don't pretend you don't have any, everyone does, it's a
    natural part of the human condition).
    Whether or not you have any interest in getting published is less
    important than are your particular criteria good enough for anyone
    except you. If they're not, and in particular not good enough for the
    general and wider science community, then that actually might tell you
    something about how good your criteria are in a wider and more objective
    sense.

    Taking responsibility for your own opinions is fine, but don't go about
    characterising people who happen to agree with other things as people
    that don't take responsibility for theirs. I make *my* own decisions
    based on *my* own criteria, and those lead me to *my* conclusions which
    *I* take responsibility for. If I share them with other people who've
    gone through the same process that doesn't make me a bandwagon jumper,
    any more than a kid counting out 2+2 on the fingers and getting 4 is
    "just jumping on the well known 2+2=4 bandwagon".

    Quoted message said:

    I will continue to do so until such times as cohesive research is
    actually carried out, until then both sides can use emotive issues or
    say things like "your assesment is rubbish until you go and do the
    same without a helmet to prove you will die/crack your skull/be
    crippled, yada yada".

    So who actually, really says anything like your quote there? I recapped
    the basic arguments for you a few posts ago and there was nothing like
    that there, and I don't recall seeing anything like that on
    cyclehelmets.org, so you appear to have taken a bit of usenet based
    shooting down of spurious logic as the main thrust of an argument, which
    it isn't. Once again, therefore, your reasoning is flawed, because
    you're using a false impression of the arguments to colour your opinion
    of them.

    Furthermore, you're are evidently subject to emotive reasoning yourself.
    Your friend who fell over walking and fractured his skull is used as an
    argument for wearing a helmet on a bike, but not walking; you put a few
    anecdotes above mass statistical evidence; whether you like it or
    not that's emotive based thinking.

    Quoted message said:

    And I still tend on the side of the OP.

    And I point out the simple fact that the reasoning you used won't stand
    up in the general arena of science. So ask yourself is that because
    science is wrong in how it goes about its business, or perhaps your
    reasoning has a large dose of justification of gut feeling (I recognise
    justification of gut feeling, I've often run along on it myself).

    Independence is not /necessarily/ a virtue, and one reason why is it
    removes the checks and balances of peer review. Those are used in wider
    science for a very good reason.

    Pete.
    --
    Peter Clinch Medical Physics IT Officer
    Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital
    Fax 44 1382 640177 Dundee DD1 9SY Scotland UK
    net [email hidden] http://www.dundee.ac.uk/~pjclinch/

  14. Peter Clinch said:
    Buck said:

    I think you have completely missed my main point, in that I make my own
    decissions based on my own criteria to take my own responsibility, I
    have no interest in getting published in medical journals.

    So your "choosing not to accept bias" is, really, just choosing your own
    bias (and don't pretend you don't have any, everyone does, it's a
    natural part of the human condition).

    I have never pretended I don't have any, where have I said that my
    opinion is based on objective
    view, my whole premise is subjective.

    Quoted message said:

    Whether or not you have any interest in getting published is less
    important than are your particular criteria good enough for anyone
    except you. If they're not, and in particular not good enough for the
    general and wider science community, then that actually might tell you
    something about how good your criteria are in a wider and more objective
    sense.

    Er see above and try re reading my posts.

    Quoted message said:


    Taking responsibility for your own opinions is fine, but don't go about
    characterising people who happen to agree with other things as people
    that don't take responsibility for theirs.

    Where did I say that? Oh yes nowhere, that is one you are making up.

    Quoted message said:

    I make *my* own decisions
    based on *my* own criteria, and those lead me to *my* conclusions which
    *I* take responsibility for. If I share them with other people who've
    gone through the same process that doesn't make me a bandwagon jumper,
    any more than a kid counting out 2+2 on the fingers and getting 4 is
    "just jumping on the well known 2+2=4 bandwagon".

    You are really upset about this "bandwagon" bit aren't you? Reread what
    I said, did I say
    you always jump on the bandwagon?

    I tell you what I did allude to, people regurgitating the same point
    over and over which you seem
    to be doing on this one transient point.

    Quoted message said:


    Quoted message said:

    I will continue to do so until such times as cohesive research is
    actually carried out, until then both sides can use emotive issues or
    say things like "your assesment is rubbish until you go and do the
    same without a helmet to prove you will die/crack your skull/be
    crippled, yada yada".

    So who actually, really says anything like your quote there? I recapped
    the basic arguments for you a few posts ago and there was nothing like
    that there, and I don't recall seeing anything like that on
    cyclehelmets.org, so you appear to have taken a bit of usenet based
    shooting down of spurious logic as the main thrust of an argument,
    which it isn't. Once again, therefore, your reasoning is flawed,
    because you're using a false impression of the arguments to colour your
    opinion of them.

    Furthermore, you're are evidently subject to emotive reasoning yourself.
    Your friend who fell over walking and fractured his skull is used as an
    argument for wearing a helmet on a bike, but not walking; you put a few
    anecdotes above mass statistical evidence; whether you like it or
    not that's emotive based thinking.

    Yes it is and I do not try to hide it.

    Quoted message said:


    Quoted message said:

    And I still tend on the side of the OP.

    And I point out the simple fact that the reasoning you used won't stand
    up in the general arena of science.

    I don't expect it to.

    Quoted message said:

    So ask yourself is that because
    science is wrong in how it goes about its business, or perhaps your
    reasoning has a large dose of justification of gut feeling (I recognise
    justification of gut feeling, I've often run along on it myself).

    That's exactly what it is.

    Quoted message said:


    Independence is not /necessarily/ a virtue, and one reason why is it
    removes the checks and balances of peer review. Those are used in wider
    science for a very good reason.

    Unfortunately the science just isn't there on this subject.

    You seem to be desperately crusading to prove how stupid I am but not
    getting anywhere
    and making claims about my posts that do not exist, it is a wild ride
    Peter, you just carry on
    don't let the facts blind you.

    --
    Three wheels good, two wheels ok

    www.catrike.co.uk

  15. Buck said:

    On 2007-02-09 09:05:24 +0000, Peter Clinch <[email hidden]> said:

    Quoted message said:
    Quoted message said:

    Taking responsibility for your own opinions is fine, but don't go about
    characterising people who happen to agree with other things as people
    that don't take responsibility for theirs.

    Where did I say that? Oh yes nowhere, that is one you are making up.

    You said that I jump onto bandwagons, strongly implying I didn't make up
    my own mind.

    Quoted message said:

    You are really upset about this "bandwagon" bit aren't you?

    Yes, I am, I'd much sooner be called an arrogant [censored] than be
    accused of just farming out my decision making processes to other
    people, yet that has been clearly implied.

    Quoted message said:

    Reread what I said, did I say you always jump on the bandwagon?

    That you didn't specifically say I /always/ do is rather a lame attempt
    at a get-out: you very clearly implied that on this subject that's
    exactly what I've done.
    You have very strongly implied, here and elsewhere, that my opinions on
    helmets are a result of me choosing who to jump into bed with. That I
    choose to place a qualified degree of trust in information which you
    openly dismiss as clearly dross suggests strongly that you think I am
    jumping onto a bandwagon.

    Quoted message said:
    Quoted message said:

    So ask yourself is that because
    science is wrong in how it goes about its business, or perhaps your
    reasoning has a large dose of justification of gut feeling (I recognise
    justification of gut feeling, I've often run along on it myself).

    That's exactly what it is.

    Higher up this thread when I stated that you did this, your meandering
    reply began with "Except I have already stated..."
    I read the "Except..." as saying it is exceptional (i.e., different) to
    what I had said. If you don't mean that, and don't want me to think
    that, don't say it!

    Quoted message said:

    Unfortunately the science just isn't there on this subject.

    There's a lot of dross and there's some good work. You just sweep it
    all into one basket of dross.

    Quoted message said:

    You seem to be desperately crusading to prove how stupid I am but not
    getting anywhere and making claims about my posts that do not exist, it is a wild ride
    Peter, you just carry on don't let the facts blind you.

    Curtis has pointed out holes in your argumentative logic, I've pointed
    out holes in your argumentative logic, Ian has pointed out holes in your
    argumentative logic, you deny all of them. You don't seem to
    acknowledge the possibility that the reason at least 3 people are
    shooting holes in your logic might be that there are holes in your logic...
    I'm not trying to make you out to be stupid, though when it comes to
    getting blinded I do think you're indulging yourself in deliberate
    selective blindness on this subject, and that's tripping you up. You're
    trying so hard not to let the facts blind you that you're not actually
    looking at them, shown by your repeated rants showing helmet sceptics
    demanding things they're not demanding and arguing in ways most of them
    don't argue, and conjuring up solid figures based on "I think so".

    Pete.
    --
    Peter Clinch Medical Physics IT Officer
    Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital
    Fax 44 1382 640177 Dundee DD1 9SY Scotland UK
    net [email hidden] http://www.dundee.ac.uk/~pjclinch/

  16. Peter Clinch said:


    Higher up this thread when I stated that you did this, your meandering
    reply began with "Except I have already stated..."
    I read the "Except..." as saying it is exceptional (i.e., different) to
    what I had said. If you don't mean that, and don't want me to think
    that, don't say it!

    You are reading it in a way you want to read it not in the way it was written.

    Quoted message said:


    Quoted message said:

    Unfortunately the science just isn't there on this subject.

    There's a lot of dross and there's some good work. You just sweep it
    all into one basket of dross.

    I'm saying that the science does not exist in any cohesive fashion, and
    yes there is a huge amount
    of dross.

    Quoted message said:

    Curtis has pointed out holes in your argumentative logic, I've pointed
    out holes in your argumentative logic, Ian has pointed out holes in
    your argumentative logic, you deny all of them. You don't seem to
    acknowledge the possibility that the reason at least 3 people are
    shooting holes in your logic might be that there are holes in your
    logic...

    My logic? Three people versus how many, three? More? You are the one
    being entirely subjective
    now, you love to argue Peter, I can see that, I'm not commenting on
    this matter further, my opinions
    work for me, Bens opinions work for him, yours work for you.

    By the way, saying that people don't use the argument about reproducing
    the accident as a way of
    discounting peoples experiences is [censored] and you know it. It is trotted
    out on a regular basis by various
    usenet regulars, it is inane.

    --
    Three wheels good, two wheels ok

    www.catrike.co.uk

  17. Buck said:


    You are reading it in a way you want to read it not in the way it was
    written.

    Or... I misread your intention because it was ambiguously written. I
    don't think I merit /all/ of the blame there!

    Quoted message said:

    I'm saying that the science does not exist in any cohesive fashion, and
    yes there is a huge amount of dross.

    What is a "cohesive fashion"? If you want work that reasonably
    reproducibly shows the same thing then I think that is there, and the
    work showing otherwise has clear and major and identified flaws, as
    opposed to limits to which one can have confidence in it.

    Quoted message said:

    My logic? Three people versus how many, three? More?

    How many of you are there? I just mean /you/, in this sub-thread. Just
    your logical consistency in this particular time and place.

    Quoted message said:

    By the way, saying that people don't use the argument about reproducing
    the accident as a way of discounting peoples experiences is [censored] and you know it.

    The point is that people's experiences are *not* discounted, but they
    will only give you a meaningful answer you can use /with confidence/ if
    they're taken in large samples, so you use large samples instead of
    singular anecdotes. That actually takes *more* actual experience on
    board, it doesn't discount it. It's why statistical samples need to be
    large before anyone takes real notice of them, because small samples are
    prone to give erroneous results. The point about citing reproducibility
    is showing that you can't treat a statistical experiment in the same
    manner as you treat an incidental controlled experiment, *not* that
    someone actually needs to go out and reproduce it.

    If you want to see if there's a 90+% chance of a fracture in a sideways
    fall without a helmet you look at *lots* of such falls and see if 90+%
    of them result in fractures, you don't say "I was there and I say it's
    90+% certain", or not if your argument is going to be credible. Small
    numbers of incidents with controlled reproducibility *or* large sample
    bases. One or the other, and the first doesn't work in this case
    because nobody's going to do it. The argument "trotted out" here is
    simply illustrating that nobody's going to do it, so therefore you need
    a good sample size, *not* as you seem to have taken it that until
    someone does the same thing without a hat you won't believe them. You
    started off this one accusing me of distorting things for my own ends,
    and here you are showing you're certainly not immune to getting a fuzzy
    picture yourself...

    Quoted message said:

    It is trotted out on a regular basis by various usenet regulars, it is inane.

    If understood as quite deliberately inane and facetious in order to
    demonstrate the necessity of a good size sample base beyond single
    figures then it isn't nearly as dumb as you're making out.

    Pete.
    --
    Peter Clinch Medical Physics IT Officer
    Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital
    Fax 44 1382 640177 Dundee DD1 9SY Scotland UK
    net [email hidden] http://www.dundee.ac.uk/~pjclinch/

  18. Zebee Johnstone said:

    In alt.rec.bicycles.recumbent on 8 Feb 2007 12:57:14 -0800

    Dan B. said:


    Again, though, if you're riding a bike not your own, it's nice to be
    able to flip down a little Borg-looking widget from your visor and
    have some rear visibility.

    Dunno why more don't use them.

    Was on a group ride a while back and only the "odd bikes" were using
    mirrors. My bent and a bunch of people on folders.

    Then a bod on a hybrid turned up and he had one, blowing my theory out
    of the water 🙂 He said he'd only recently added it and wondered why
    he hadn't done so earlier.

    Most of the others on the ride were using some variety of flat bar
    rather than drops so mirrors wouldn't have been too hard. I seldom
    see any on my commute, maybe one helmet mirror every couple of months.

    Never occurred to me to use one when I was commuting on an upright so
    perhaps it's just exposure.

    Zebee

    I have a bar mounted mirror on the trike but have never tried a helmet
    mounted one,
    wouldn't it cause a problem in an accident with snagging or applied localised
    pressure to a point on the helmet?
    --
    Three wheels good, two wheels ok

    www.catrike.co.uk

  19. Buck said:

    wouldn't it cause a problem in an accident with snagging or applied
    localised pressure to a point on the helmet?

    "Unlikely" is my guess: most of them that I've seen would just snap off
    in the same manner as a visor: you'd have to be going pretty much
    straight down the mount in a straight line as you hit whatever. It
    /could/ be a problem, yes, but OTOH so could not seeing what's about to
    knock you off...

    Helmet/glasses mirrors tend to be more decoupled from vibration than
    many bar mounted ones. Whether that's a problem would depend on your
    roads, tyres and suspension.

    Pete.
    --
    Peter Clinch Medical Physics IT Officer
    Tel 44 1382 660111 ext. 33637 Univ. of Dundee, Ninewells Hospital
    Fax 44 1382 640177 Dundee DD1 9SY Scotland UK
    net [email hidden] http://www.dundee.ac.uk/~pjclinch/

  20. On Feb 9, 7:23 am, Buck <[email hidden]>
    wrote:
    <snip>

    Quoted message said:


    I have a bar mounted mirror on the trike but have never tried a helmet
    mounted one,
    wouldn't it cause a problem in an accident with snagging or applied localised
    pressure to a point on the helmet?


    <snip>
    Possible, if unlikely, IMO. I'll take that potential increased risk,
    in exchange for the benefit of being able to better perceive my
    surroundings and (hopefully) avoid the accident in the first place.

    Best,

    Dan

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