You realize baseball has been about stats for 100 years right? Batting average is a stat. RBI's are a stat. Home runs are a stat. I don't get why some people are so scared of new stats. It's just a new way to understand the game. But at it's core it's doing the same thing batting average RBI's and HR have been doing for a century.... trying to put value on players.
I think you are both right on this one.
Baseball and stats are quite the marriage. I remember as a wee little one always looking at those data points on the back of baseball cards and using it to figure out who the good players were.
And I love stats. Set the damn class grading curve in both college stat classes.
But I have learned that using stats to predict future human behavior is quite the risk. Use it on dice, cards, machines, physics, etc and it is really reliably predictive. Humans, to an extent, but not so much. I can give you several examples of stat.folks that proved on paper how to save a company and make it prosper, only to watch it go bankrupt. Marketing folks are quite the subset in a company....but I digress.
It is frustrating for people that use what they are actually seeing to base a projection to converse with someone who only looks at historical data points to derive conclusions. Humans do change. Not always or to an extreme degree as the non stat person may project sometimes, but they do. Physical and mental abilities can and do change. And it can be over any period of time. As fans, we rarely know what is going on mentally with an athlete day to day. Are they in a good spot, bad spot....we rarely know.
Historical stats can’t know this either. Stats also don’t know how to provide predictive accuracy when guys are playing injured vs felling like Superman. Or whether a player has changed a technique recently.
Stats on humans can be a great help, but you better be careful as they can set you up for failure as well. You have to be cognizant of changes in human behavior and capabilities.