Interviews are a two way process. People seem to think it's about the interviewer showing up and answering a bunch of questions, but the goal is to try to make

Interviews are a two way process. People seem to think it's about the interviewer showing up and answering a bunch of questions, but the goal is to try to make a connection. Sending a thank you is part of making that connection. Your 'thank you' can include specifics of the conversation that interested you, or more questions that you have in order to show your interest. It's another opportunity to communicate with someone you may want to work with.