Dr. Hawking's First World Problem: What If Aliens Call!?

Here from Stephen Hawking is a First World problem if ever there was one: If aliens call, do we pick up? From The Independent:

If we actually end up discovering aliens then they'll probably just wipe us all out, Stephen Hawking has said.

When we made contact with any aliens it would probably be like when the Native Americans first met Christopher Columbus. And, in that case, things "didn't turn out so well" for the people being visited, Professor Hawking has said.

Stephen Hawking made the wa...