Originally Posted by tableplay View Post
Einstein thought that spooky action at a distance (entangled particles) was impossible and Bohr thought that this wasn't the case (1920s). Ironically, it was through Einstein's quantum mechanical formulations that the concept of entanglement first manifested itself (it was only later that Einstein came up with hidden variables/locality to explain spooky action at a distance/non-locality; he was in Bohr's camp originally). Years later (1964), John Bell proved that entanglement was possible/happening through his famous thought experiment (Bell's Inequality) and this was later confirmed experimentally many times over, so Bohr was right.

Apart from this, Einstein's contributions hold up extremely well, and, ironically, as stated above, he was the one that came up with non-locality in the first place, and it was only later that he changed his mind about it (who wouldn't change their mind, it's the most fucking bizarre thing imaginable - like magic really;kudos to Bohr and Bell for sticking to their guns).

Best, TP
Agreed, My favorite quote from that is when Einstein said “God does not play dice” He just couldn’t get over the randomness. It is amazing though that every few years even this long after his death you still occasionally hear about a new observation that confirms one of his predictions.