WhatTheBuck wrote:Doctor MJ wrote:WhatTheBuck wrote:
Plus minus - the ultimate correlation over causation stat of all time.
Inferring causation from correlation is pretty much what human beings do when they draw conclusions.
Yeah, and its pretty much the reason why some of the conclusions we draw are dumb ones.
For example, does plus minus take into account what a team needs to expend to stop a player? Does it take into account that he makes it easier for a bench unit to take over because he has exhausted the best players of the opposition that have to sit when he sits because their sole focus is to try and contain him?
Does it take into account whether a player is playing with the best players on his team or whether he is allowing other players to take a break whilst he plays with the bench?
Does it take into account how good/bad the rest of the squad is?
You talk as if there's some other approach we use that leads to perfect epistemology. There isn't.
I'm not saying +/- is never used poorly, nor am I saying it captures all of the information we'd want about the basketball. I simply mentioned the connection between "without him they'd..." reasoning and +/- stats.
Re: does +/- take into account...? On a base level the answer is clearly no. You know what the stat is, and that's all there is to it.
However, in the context of an MVP discussion, you're talking about a bunch of guys taking similar tolls on their opponents starters, and so the onus is really on the person wanting to suggest something like "Sure he's less impactful when he's on the court, but he the strain he puts on the opponent's capacity to tread water is greater".
Re: does it take into account whether a player is playing with the best players on his team or how good the rest of the squad is? Well, yes, actually. Not the raw stuff, but those that use regression, that's precisely what they're doing.










