Black and white to me means yes or no, right or wrong, good or bad. Answering the question in other words.Mr P. 'Maharaji' Rawat used to argue there was no such thing. He would say that because it was nighttime in the other hemisphere you could not even say it was daytime and be right.
It is daytime, a warm and pleasant damp cloudy late summer hill valley antipodean morning and the birds are singing.
My apologies if it seemed I was tagging Andries a liar by discussing black and white thinking in this thread, it was totally not my intention, I do not believe that of him at all.