I believe the first is likely true, but I was thinking of the latter: most investing arguments are reasonable and when there is no contradictory it's easy for o

I believe the first is likely true, but I was thinking of the latter: most investing arguments are reasonable and when there is no contradictory it's easy for our brain to be swayed into believing what you're hearing. I think this is true of all topics. Unless you already know about something you may believe what you're told if it seems reasonable, see also the Gell-Mann amnesia effect.