My neighbor and his kids always leave their bikes unlocked in their
front yard. I've heard of a thief trading up for a bike that was
better, but what happened here was unusual. The neighbor's bike was
taken, but another was left in its place. The bike left behind is at
least 3 times more valuable and fits the size of the neighbor much
better. He now leaves this bike unlocked in his backyard, as a gesture
towards security. He rides it every day, as it's so much faster and
comfortable than the stolen one.
I have a hunch that this bike was also stolen and was used for
temporary transportation. The thief may have felt it was time to dump a
hot bike and use one that may not be reported (this was the case). If
so, this is a clever ploy, to break the chain
of possession and have a bike that is stolen but won't likely be
reported. Not that I'm trying to give anyone ideas.
Steve McDonald