There's also confirmation bias. If you go in with a slight bias against age, and you hire someone over 35 who doesn't work out well, you can come up with some r

There's also confirmation bias. If you go in with a slight bias against age, and you hire someone over 35 who doesn't work out well, you can come up with some reason that's related to their age. What people don't realize is that if they hire an older engineer that does well in the role, their age will also have something to do with it.