R’ Chaim Kanievsky put out a sefer with a list of things that are kashe l’shikcha.(btw he himself said that he forgot to mention all of them). someone here mentioned wearing socks while sleeping and eating from a pot that food was cooked in. i never heard that and i would appreciate knowing a source, thanks. The gemara mentions quite a few but i wonder if that only applies to bavel or eretz yisrael. meaning, this sort of thing may depend on many factors and could change based on time and place. this would help explain why all this is not mentioned by rambam or shulchan aruch especially since doing something to forget one’s learning is an issur doraisa with severe consequences(avos 3-8)
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