My favorite: Signal Detection Theory. It seems applicable to many different areas in life especially as we become more and more data oriented. Which emails to r

My favorite: Signal Detection Theory. It seems applicable to many different areas in life especially as we become more and more data oriented. Which emails to read, which server exceptions to respond to, which person talking to you is attracted to you, which visitors will buy, etc., etc. It wrinkled my brain and got my pulse quickened.