That is true, as are the other notes you've taken from the book. I don't, however, see how any of that has to do with "trusting your gut".

I'm not sure what point the book's author what trying to show but based on your note he/she failed miserably. The title screams "clickbait".

I would argue the opposite: "Trust your gut". First impressions are usually right but your rational mind tries to tell you otherwise. If you have a hunch, accept it. Over-thinking it tends to always be the wrong course of action. Always.

Physically attractive people, the pretty faces, are put in view in most businesses because our ideal of beauty appeals to the senses than do the 'less attractive' and tend to be more trusted. But if your very first flash hunch about any person or situation is to distrust him or her or it then don't let 'rational' judgement override that. Physical appearance has nothing to do with trustworthiness and using raw data to make the 'rational' decision and ignoring your gut hunch leads down the wrong path. Still, physically attractive people are often used as the 'face' of a business because they "seem" to be trustworthy, whether they are or not. Either can be true but as the vain people we are we tend to trust beauty over the less beautiful. A true but sad fact of humanity.

Go with your gut, your very first impression and you won't go wrong; overthink it and you will.