On Sun, 16 Aug 2015 20:59:26 -0500, Sam E wrote:

That's true. There's also the tendency to imagine you're where the
person you're talking to is. With the phone, that's not in your vehicle
and it takes too long to shift attention.

However, if all this is true, that cellphone use *causes* accidents,
then the paradox is why haven't the accidents gone vastly up concomitant
with the increase in cellphone ownership in the USA?