HaLeiVi: That would only be if we Pasken Yeiush Shelo MIda’as. SInce we don’t, you would have to know.
I assume that one of the reasons people say Rashi doesn’t actually hold what he seems to say is because what happened to Nicha Leih L’inish L’me’evad Mitzvah B’mamonei.
DY: I mean, the best I can think of is a Yesh Koach to impress upon people how much you really need to worry about other people’s property. But that’s weak.