At the end of the day nearly everything anybody does can be made into a stat. It's history, it's in the books, it's logged.
There's a great value in analyzing data, one of the reasons why I love using API's.
However, at the end of the day they can only predict based on past data. Numbers can't tell you exactly what's going to happen, only what already has and the likelihood of something that may. People get way too caught up in trying to pass the last part of as fact or certainty, although that's kind of the point when it comes to studying data.
It's a conundrum that needs more emphasis on balance.
As a simple example, look at what your posting data is on this site to the left. Most likely you and anybody else can look at it and determine if you or someone else will make post tomorrow or sometime this week/month. Accuracy increases when considering someone's posting history for the week. Will they post tomorrow? Nobody knows, not even them. Things may happen that will influence their decision to that even they have not taken into account. But can we make a decent guess if they will based on their recent activity? We sure can.