We Have No Idea: A Guide to the Unknown Universe

by Jorge Cham

But here is the thing about physicists: if you say something is “almost impossible,” that’s only going to get them riled up.

And breaking causality is not a minor thing even for first-time offenders. The universe tends to take it pretty seriously.

Antiwater would look and feel and behave the same way as regular water except that if you drank it you would explode in a blinding flash of light, which, we admit, would be antirefreshing.