Thanks!
I have always wondered how it is that traders seem to move price around the mean, yet most have no idea that they are doing so, and are certainly not putting trades on just because they realize that we have ventured so far away from the mean and now need to return and try for some trades on the other side of the mean. So even though each trader is doing their own thing, collectively, they are all reacting to the mean in some way.
I suppose its like trying to figure out why price is moving up and down. Doing so is impossible to accurately asses nor would it matter, but seeing that there are more sellers than buyers is a fact evidenced by price dropping and something that we can take advantage of.
Again, the mean is created by the trades that are made, not the other way around. If price moves away from what had been the mean and never returns to it other than possibly to bounce off it, then traders are seeking a different value, as they did a year ago. Eventually, as trading stabilizes, a new mean is created, as it was last Spring.