[Avodah] establishing mamzerut

[Arie Folger]

RJRich wrote:
> Let's try a different case. 1 piece of treif meat which has a
> radioactive signature falls into 2 pieces of kosher meat.  Do I need to
> test the piece I take or rely on rov?

Why not test? We generally accept Tosefot's idea that wherever we can find 
out, we don't rely on rov. In practice, though, that would depend on the 
soundness of the science behind it and the feasibility of testing. There is 
no obligation to test people for mamzerut.

Arie Folger