When the facts change, I change my mind. What do you do?
Of course it’s important to also not accept without question the facts that a person gives you, because people do lie.  For example, do you <i>really</i> think that shirt is 40% off today only?  That’s probably just a lie.  I saw a TikTok video yesterday that showed a picture showing a picture of a girl with an underdeveloped jaw and the voiceover said it was because she breathed through her mouth too much.  One of the comments pointed out that this is actually a specific genetic condition.  So the poster of the TikTok invented a new “fact” out of thin air and presented it as truth.  To change my mind based on that would be a mistake.