Even efficiency takes a back seat to the[ir] real top priority: Hurting the right people and being seen to do so.

Most of the software on smartphones is built from the ground up to grab every bit of user attention it can and this makes phone use more dangerous than eating or fiddling with the radio. So much so that law makers and law enforcers notice and treat phone use differently from other drive-time activities.

Too late to throw stones, you emptors should have caveatted when you had the chance!