CarltonTheBear said:
And I think corsi is a pretty effective measurement of a player's puck possession abilities.
But "puck possession abilities", I think you'd agree, is a pretty vague term that doesn't translate particularly well to any actual attribute. Does it mean that a player is very good with the puck on his stick? Wins battles? Is good at taking the puck away from other players? It seems like you're using it as a stand-in for a sort of general effectiveness and even before you get to the specific criticisms of it that busta pointed out, I'm not sure that there can be all that effective a measurement of something so unspecific. Goal scoring, at the very least, relates to a specific event that happens on the ice.
CarltonTheBear said:
It of course doesn't provide all the answers, but if you were trying to decide between two identical players whose only difference is one seems to generate more shots while on the ice wouldn't you want to pick that player?
Well, I think the problem there is in the "Seems to" generate more shots while on the ice. If I, as a hypothetical GM, really cared about these things wouldn't I be far more interested in the actual specifics of what a player did or didn't do on a given shift that led to shots for/against rather than a sort of all-purpose cumulative effort that assumes a sort of evening out in the aggregate? My personal issue with Corsi has never been that it's too advanced but rather that it was a lazy and intermediate stand-in for actually evaluating the effect a player has while on the ice.
CarltonTheBear said:
But to go back to your original statement, do goals provide all the answers for how to build a successful franchise, or do they just shine a light on how games are won or lost? Since the highest scoring team in the league doesn't always win the Cup, I would argue the latter and I'm sure you would too. So doesn't goals just narrowly quantify a pretty elementary piece of traditional hockey wisdom (the team with more goals wins)?
Well, but I think that you're moving the goal posts a little by switching back and forth between these concepts as individual measurements and team concepts but, again, I think that the specificity of "Goals For" provides it with a certain value in it being a pretty cut and dried measurement of something that's pretty important. Remember the issue is "answering questions" and not a sort of all purpose effort to solve everything in one go. "Who is the best player/team at scoring goals" is a question that someone might have honestly and can be effectively judged. Counting goals answers that question. I don't know what question Corsi answers because, again, "Who seems to generate the most shots" or "Who is the most generally effective player at driving the play" doesn't seem to be something someone would spend a lot of time on if they were really interested in the specifics of how things happen. Actually timing puck possession, for instance, would be measuring something along those lines. Or offensive zone time, again, would be. Shots for/against. I don't know if Corsi measures anything particularly meaningful that isn't better covered by one of those more rudimentary measures and, in fact, seems more subject to the influence of distorting biases(say, not accounting for the fact that the best number of shots to take on a shift is one).
So, yeah, I mean I get the problem with Nonis' comment if the idea is a war between fancy stats and reading the sports pages but I don't have any problem with Nonis looking at what exists in the world of advanced stats in Hockey nowadays, not thinking they outweigh or add much to the luxury of a professional scouting department and not devoting a lot of time/energy to them.
And, honestly, I don't know that it makes him that much of a dinosaur. Even in Basketball, for instance, where I think they're doing a much better job in actually evaluating players in a real-time sense there's still a big gap between evaluation and implementation.