I have a PhD, earned while on a prestigious national fellowship, and graduated with highest honors in undergrad. I graduated earlier this decade. I have enrol

I have a PhD, earned while on a prestigious national fellowship, and graduated with highest honors in undergrad. I graduated earlier this decade. I have enrolled in a single MOOC to keep my skills current in my field, and I couldn’t finish it. Maybe it’s because I work now, but I simply couldn’t find the time to complete the lab assignments when only putting in 10 hours a week. My sample size is low, but I get the impression that some of these MOOCs basically demand that you have traditional student-level time and focus to complete them. Is that wrong? Perhaps not, but 4% then becomes unsurprising for a completion rate.