I know what is Random in practice. Random is when I place an order expecting a profit, I end up at a loss; when expecting a loss, I still end up at a loss.
Actually, gerry's post has nothing to do with the way in which you're defining "random entry". He was, in fact, agreeing with a previous post of mine, if it's still there. As for the "impossible set of conditions", they are hardly impossible. Rather they define random selection, a basic principle of sound research design.
Sorry OddTrader, glad you told me. I think I confused your name with one that's close to it. So you didn't catch the bug yet. Please forgive me.