It's a simple question, but when you are asking people who buy and sell short and cover sometimes 5 or 6 times over any given trading day the answer can be complicated. Yahoo can be a buy at open and a sell/short 15 minutes later and again a buy/cover an hour after that.
And why should I bother to prove the co1done wrong? When I am right I spend his money, when he is wrong I spend his money. What happens when I am wrong and he is right nobody knows.
Have you stopped hitting your wife is also a simple question, care to give us a yes/no answer?