On Wed, 20 Jan 2016 19:34:38 +1100, Rod Speed wrote:

By checking if the phone was being used at the time of the accident, stupid.

While I admit that's easier to do now than ever, the
fact is that there are roughly a few hundred thousand
accidents per year in the USA and nobody is checking
each of those accidents for whether a cell phone was
in actual use during the exact time of said accident.

So your answer is merely cherry picking, and hence,
useless for an overall idea of what is going on.

It's as if you're a fifteen century philosopher who
notices maggots on meat and proclaims spontaneous
life has formed on your meat.