Cell Phones

“I've come up with a set of rules that describe our reactions to technologies:
1. Anything that is in the world when you’re born is normal and ordinary and is just a natural part of the way the world works.
2. Anything that's invented between when you’re fifteen and thirty-five is new and exciting and revolutionary and you can probably get a career in it.
3. Anything invented after you're thirty-five is against the natural order of things.”

― Douglas Adams, The Salmon of Doubt

And then there was Socrates, warning against writing things down because it will rot the kids memories. And a similar outrage at the printing press. And the newspaper. And radio. And television. And computers. And then finally the internet. To be followed by whatever comes next...
A history of media technology scares, from the printing press to Facebook.