> Goodhart's Law: When a measure becomes a target, it ceases to be a good measure.

This makes me think of the first song I posted to YouTube. I couldn't help but curiously flip through the viewer statistics. Automatically I began wondering how I could prevent the 50% drop-off at X seconds, and what type of person was sticking around beyond the drop-off. And before I looked much into it I realized this would be a great way to suck all the life out of something that's supposed to be fun.