Full Idea
Although Hempel's raven paradox produces an absurdity of irrelevant observations, we can ignore it because (unlike good observations) observing a white handbag supports the contradictions of 'ravens are black' and 'ravens are non-black'.
Gist of Idea
Observing irrelevant items supports both 'all x are y' and 'all x are non-y', revealing its absurdity
Source
Jonathan Schofield (talk [2005]), quoted by PG - Db (ideas)
A Reaction
The idea of 'eliminating it from our enquiries' cannot be totally irrational (e.g. in detective work), but it is only seriously sensible in a restricted domain (such as a country house)