I am reading a book called "Stat Shot" by Rob Vollman, and it is fascinating. It also makes my brain hurt, but that is just because they are smarter than I am. But what they are saying makes basic sense, even if I don't understand the nuances of their math. I am not close to finishing yet, however I see a tool in there that would allow me to see how close Oliver Bjorkstrand is to being a late draft Kane. I still have more math to do, and that is going to be a challenge.
Until I have conquered these formidable calculation demons, I have to rely on what is frequently called the 'eye test' by those trying to discern understanding from the competing analytics and 'scouting' camps.