When applying for jobs after my PhD, should my CV include an incomplete degree I read towards years ago? It's a field completely unrelated to what I'm doing now. However, before my final year when I started getting sups and failures by the dozen (my reason for quitting) things actually went swimmingly. I worked with a renowned professor as an undergrad research assistant for a spell and even published a paper (on my own) during that phase of my academic journey. I didn't get a certificate out of it, but I nevertheless feel I honed some valuabe skills then (and of course I have a transcript listing the passes and failures).
I have since moved onto a completely unrelated humanities field. Should I mention the incomplete degree on my CV? If I ignore it, prospective employers might wonder what I did for three years of my life, surely? Should I list my science publication on my CV when it is irrelevant to what I'm doing now? Does quitting and switching tracks make me look flighty?