Re: What are your favourite theory/paradox? (Preferably scientific).
My favorite is the predestination paradox and my favorite take on this was on Robert Heinleins short story called All you Zombies. It was adapted into film and titled Predestination
(Sings Im my own grandpa in the background)
The trailer says "You will love this film". Guess they really have a time machine. (Sings Im my own grandpa in the background)
Added it to the list.