That people who are terribly emotionally tied up in an argument, when it is pointed out to them the flaw in their argument or position, cannot accept their failure in logic.

“Yes, but….”

“A=B Yes? “

“Yeah”

“B=C, yes?”

“Yes”

“Therefore A=C,”

“NONONONONONO…..I think that….”

Aaaaand around we go again. Emotion is the enemy of logic for many people. Religion is the only thing that trumps that…..