I think this has to be the silliest statement! And then there's one where someone says it lowers your response time to that of being drunk. A recent study has shown that cell phones are 5th on the list of distracting behavior while driving accounting for only 5% of accidents. Check out this site for more: content.health.msn.com71477.htmOpen ↗.
In order the offending distractions are as follows:
Rubbernecking 12% Looking at scenery 10% Passenger of child distraction 9% Adjusting radio, tape player, CD 7% Cell phone use 5%
As for becoming senile -- There are those who overuse the mobile phone. Maybe they were senile to begin with.