Ether you are right or I am right. By taking this stance, all he tries to do is to prove the other party is wrong. The truth is, both could be wrong.

例：
老肖说他的手术成功率85％，彭建说0％。肖粉努力通过证明0％是错的来证明他是对的。

HHS当是也用这个fallacy, 被羽矢引过来过。