Many of the Silicon Valley execs who created the apps and hardware that drive us all to the Internet—including kids—now say they cut down their kids’ web time and think their inventions are dangerous and addictive.

There are some who argue the other side, but according to this article in the New York Times, a considerable number of CEOs keep their own kids off phones, iPads and the Internet for as long as they can, some until high school.

Is it educational for kids to get an early start on electronics, or, as some mothers used to say about TV, does it rot your brain?