I think the bias on this comment thread would lead most people here to be well researched and not do the two things you mentioned. I wouldn't buy a car without

I think the bias on this comment thread would lead most people here to be well researched and not do the two things you mentioned. I wouldn't buy a car without research. The example of a doctor is more fraught - in the US I met the doctor and would have changed if I didn't read them and believe them to be competent in my judgement (And the institution I went to had already a high bar for quality). I think what is missing from their comment is that people go to do those things without doing prior research. In the case which you go to the car salesman once, you have already done your research - same with the doctor. I know people who would exhibit the behavior without doing the prior research. I am not sure if they believe the car salesman or not, I can't read their mind.