Everyone is subject to heuristic biases and the click-whirr-type tics.
How to arouse a guy? Act like you're enjoying his company. Everything a porno movie needs is a girl moaning uncontrollably and pretending to enjoy being dicked. Also be hot.
How to arouse a girl? Surround yourself with hot women. Women will love anyone who is surrounded by hot chicks.
How to be right? Sound confident, certain, and never admit you're wrong. The number of people willing to buy into absolute bullcrap is so high it's hilarious. Just look at Jordan Peterson. There are times when you happen to have sufficient domain knowledge to know they're talking horseshit, but other times you're inclined to go with whoever sounds most confident.
I used to think that duck babies are dumb as fuck because they are forced to attach themselves to the first thing they see, out of forced natural habit. People are the same. It's sad and freeing at the same time.