Null is neither correct nor incorrect. If I don't play a game of chess today and you do, I haven't lost anything. I simply haven't played. The world is not binary.
This claim is tantamount to a schoolyard taunt like, "If you don't fight me, you're a coward." And claiming victory when your opponent wasn't even at school that day to hear the taunt.
This claim is tantamount to a schoolyard taunt like, "If you don't fight me, you're a coward." And claiming victory when your opponent wasn't even at school that day to hear the taunt.