[throwawaybcporn]

During this period, my dad said something that stuck with me: "The interviewing process is very human. There are all sorts of reasons it can fall apart, many that have nothing to do with you. Maybe they've got an inside candidate or someone decides they don't like the school you went to or the tie you're wearing."

I've found this to be true in a small number of my experiences. There are certain positions I interviewed for where my history was 100% in line with their needs, the interviews all went well and I should have gotten the job. But then didn't. Have no idea why not.