From PhilPapers forum Graduate Programs:

2011-05-14
Graduate Logic Requirements
I replied before but it was erased by an editor of this web.

I try again:XXth logics are experimental,not related with   the "natural" way of thinking of the  humans (which was stated by Aristotle in his Logics) and it is i-logical, in the sense  that XXth Logics rapes the natural way of thinking.

 XXth Logics is interesting only as an experiment  and nothing else.

And too often the  XXth Logicians use to demonstrate  their conclussions after a long chain of sillogisms just by saying "this is the way it is because I say it is " and that ś all.

 We must accept what the XXth logicians say, just because    they say that we must accept it, not by  demostration.