Quote:
Originally Posted by Elrazor
To be clear, I'm not saying that stats shouldn't be used to supplement decision making.
Let's say you employ 2 scouts. One of them you just send to a game without a list of players to watch, and to report back with his observations.
The other game you tell your scout "hey take a look at this player who is over .7 xG+xA per 90".
Who are you going to get the least-biased data from?
If I've understood you right this is the situation:
Scout 1: Has gone to a game without a specific player to watch and at that game is subject to the litany of biases that all humans, even experts, have.
Scout 2: Has either found this one specific player from a large database and those stats have looked appealing, or has just seen a player he likes and then looked up his numbers post-hoc.
If it's the former then the least biased data comes from the database. If it's the latter then the bias is human anyway and a good boss will be doing anything they can to minimise that.
To be sure, there is no data which is bias free, and even if there was, there is no human that can interpret it without bias. However, that doesn't mean that some things aren't intrinsically less biased than others, such as a robust, yet imperfect, statistic such as xg.