I wouldn't call it a mistake but when I'm interviewing I look for a good fit. There are lots of reasons why a company or position in a company might not be a go

I wouldn't call it a mistake but when I'm interviewing I look for a good fit. There are lots of reasons why a company or position in a company might not be a good fit. If you're interviewing and people decide that they're not a good fit that's probably a good thing. It's better for them to not take the job than for them to be unhappy and leave six months or a year later.