NGFS 2018

What Causes What? The Paradoxes of Time Travel

Sun 22 Apr | 17:00 | Petrassi hall
Can we alter the past? For that matter, can we alter the future?  If you had a time machine, you could go back and try to kill Hitler. But what if you killed your own grandfather instead. You would prevent your own birth, and then there would be no one to go back and kill the grandfather. Here come the paradoxes of time travel. Effects manage to undo their causes. Cause and effect go around in loops. “One must not think ill of the paradox,” said Kierkegaard, “for the paradox is the passion of thought, and the thinker without the paradox is like the lover without passion: a mediocre fellow.”  Philosophers have been arguing the nuances of causality for centuries. Now that scientists and science-fiction writers have gotten into the game, it’s all gotten a lot more complicated and a lot more fun.
James Gleick 
Vincenzo Napolano
tickets at € 3.00