Shor Ha'Niskal, Easements and Star-Crossed Shidduchim

A while ago, we discussed the question of whether a purchaser who was aware of the precise nature of the item he has purchased, but unaware of some Halachic or legal rule, or scientific fact, that affects the item’s desirability, may claim מקח טעות. I have recently encountered several additional sources relevant to this question. […]