Tosfos says in Shabbos Daf 3a that even when there isn't a problem of lifnei iver since the person would be able to get to the prohibited thing in another way, still there is an "issur d'rabbanan" ...
Is it permissible to send an e-mail on Friday afternoon, knowing it will be answered or at least read on shabbat by a Jew? I am inclined to think that, since the alternative to someone ...
I would like to look at the scope of Lifnei 'Iver -- the commandment to not put a stumbling block before the blind (Lev. 19:14). Specifically, I would like to know how one is punished for the sin -- ...