This one. They are doing the same with another 5-10-20-50 people. Walking away after the 5th only makes their life/job easier. I get it that some companies wan

This one. They are doing the same with another 5-10-20-50 people. Walking away after the 5th only makes their life/job easier. I get it that some companies want to be 110% sure about the person, and not take chances with 'just' 3-4 interviews, in which some things may be left untouched/not discussed thoroughly, dropping the level of certainty to 70%.