Oftentimes in nature, animals avoid a fight, because an injury could mean death. Animals routinely pick their spots and target weaker animals, so as to maximize their risk/reward.
My opponent today did not. Three hands into play, and I have A9o, 3-bet. We see a flop with two jacks, and an ace. I bet, he calls, and then donks turn and jams river.
He had picked his spot poorly. See, the decision was already split, but I couldn't continue the tournament if I didn't call. He forced my hand.