Thanks Jim, I don't think I suggested that Wilczek thought time crystals violated known laws, but the article I quoted suggested the material was like a perpetual motion machine. On Einstein, there seems to be differences of opinions on his opinion of the aether. Here is an example:

https://medium.com/@GatotSoedarto/albert-einstein-began-by-rejecting-the-ether-theory-2e0d8ff8a812#:~:text=In%20special%20relativity%20Einstein%20rejecting,believe%20in%20Michelson%2DMorley%20experiments.