In college I learned: That which is irritating is stimulating. Arpa could say things is such a way that would force an opinion. Sometimes while in general agreement with the subject, the manner he took in saying it or his angle of aggression would cause~Yes I agree, No I don't.
Arpa could be counted on to approach things so that they or his handling of them couldn't be ignored.
It was stimulating!
I miss you Arpa and all you added, glad there was you.