I don't think measuring completion is a good metric. I don't see the value in a certificate, so I never buy them. I've taken a lot of courses that I haven't ful

I don't think measuring completion is a good metric. I don't see the value in a certificate, so I never buy them. I've taken a lot of courses that I haven't fully completed and still got a lot of value out of them. Sometimes I get bored or busy and don't complete them, sometimes I'm only interested in parts, sometimes I don't want to do a pile of homework on a topic that I'm just looking for a refresher on. I think the Kahn academy model is a much better one where you complete things in much smaller units and can pick up where you left off, but it doesn't really get into more advanced material. I see people say there's value in completing the course with others, but I value the flexibility.