Yeah, it's a dynamic system. They usually run the numbers for the first time in December and the put them out each day.
The wild thing, and this is why I've said the committee shouldn't even start discussing the bracket until Selection Sunday, even if it means pushing the selection back, is that it changes during the selection process.
Like last year, our resume changed SIGNIFICANTLY in the final couple days of the season with our wins over Auburn and Arkansas. But the committee was already discussing teams and where they should go.
If "every game counts the same" then the committee shouldn't even sit down and look at the team sheets until all the data is in. Because some of that late data can significantly shift things around but the people in the room are probably hesitant to make those kind of drastic changes. (the team sheets are the official data that's included in the selection, which includes the NET rankings, the games themselves which are listed in quads, the predictive and resume-based metrics which are KenPom, Sagarin, BPI, KPI, SOR, etc)
I ran a mock selection on here a while back and then used the bracketing principles to place all the teams and it took like two hours. There's no reason this group of people needs four days or whatever. I say this all the time but when you lock a bunch of people in a room together there's no telling what they'll be able to convince themselves of.