The m-Qubic video messaging system is basically a post-it note on the fridge, but for the 21st century. You hit “record”, relay a quick message, and in tens of millions of years a highly advanced civilization will discover a fossil recording of you getting really pissed off with your flatmates eating your cornflakes. They’ll deduce that we were a warlike, aggressive race, and will blow up the rest of the planet in spite…