It can be truly amazing to watch a teenager send a text message on a cell phone. The speed and dexterity with which they can communicate a thought is impressive.
It also helps explain why so many think they can do it while driving a car. They don't seem to expend any mental energy doing it.
But they do. It is distracting. It does take their concentration away from what they should be doing. And as we keep learning and relearning, it can be fatal.
"Don't text while you're driving" sounds like the same kind of advice as, "Don't drink gasoline" and, "Don't point that gun at your head." You really should know enough to not do it.
But sometimes common sense is not enough. Should there be a law banning texting while driving?