I watch Youtubers build things, or just playing my favorite video game and while I learn a lot from them, sometimes I learn more from the times that I disagree with them.

I was watching a video for a game I play, about a dogmatic approach to solving a particular problem and realized it had been min-maxed into the ground by bad math. By de-optimizing it a couple percent I could get 2 and a half beneficial outcomes instead of just the one. Given how time consuming the process is, it was madness to sink so much effort into solving only one problem. Of course having spotted something someone else missed, I've been staying up too late trying to validate my theory. Unfortunately my change barely made it any faster, and my first attempt to break it down into two phases didn't work out and ended up costing me more time than I had saved.

Point is, I got all new nuances and areas to explore based on watching a video that I felt was provably wrong.