that post was a revelation to me and led me down the path of making object detection classifiers for various projects. I was shocked at how easy it was to build a classifier that was as good as a human, but faster (or more accurate than a human in the same amount of time).

I ended up learning there is a whole area of computer vision in industry- relatively "boring" stuff like just looking at a line of bottles going by. I went on a tour of the money making machines in DC and they stream sheets of bills by industrial vision cameras to detect whether the bills are within QC.

Still amazes me people get paid to do this. To me it's just like a big fun game.