A believable conclusion can make a broken argument feel airtight

Evans, Barston and Pollard gave people syllogisms where logical validity and the believability of the conclusion pointed opposite ways. People readily accepted invalid arguments when the conclusion felt true, and rejected valid ones when it felt false, voting with gut belief over logic in a majority of cases. Telling subjects to "reason logically" only partly fixed it.

— Jonathan St. B. T. Evans, Julie L. Barston, Paul Pollard, On the Conflict Between Logic and Belief in Syllogistic Reasoning — Memory & Cognition, 1983