News flash: Doing something that requires your attention reduces your ability to do other things at the same time which also require your attention
The New York Times points out that
if you engage in an activity that requires your attention,
then it reduces your ability to do other things at the same
time which also require your attention.
For some reason, however this is news when
one of those things is sending text messages.
I wonder if,
had contemporary news editors existed back in the days when books
were invented,
they would have published big scary articles expounding on the
dangers of reading a book while riding a horse or chopping
firewood.