In all of the interviews I've conducted there have been 2 interviewers to 1 interviewee because everyone has biases and people remember things differently accor

In all of the interviews I've conducted there have been 2 interviewers to 1 interviewee because everyone has biases and people remember things differently according to those biases. The biases don't even have to involve people to throw off the results. They could be against the usage of a particular API, for example, which I find insane, but I've seen it happen.