Proof of the non-existence of #magic: consider a magic bag which can only contain bags like itself. The bag can not contain nothing, therefore it contains infinite bags. Given that everyone implementing anything #recursive fucks up like this at least once, any wizard doing this will crash the universe. The universe has not crashed. Therefore magic doesn't exist. #ProofByContradiction

If pointing out the absurdity of someone's argument by taking it to an extreme is a #strawman argument, then take me to the wizard #reddit

#reductioadabsurdum is my favourite Harry Potter spell

#proofbycontradiction #morons

At about 2 am I came up with an elegant #ProofByContradiction. But now I can’t remember what it was I proved. Bother. #mathstodon