Now this is all news to me. How long has that been inplace without it being explained to everyone?
Since the system was conceived, and it was explained. I'm sure that I've posted the complete formula somewhere, but the basic idea was set out in the original post. Weeks are now individually weighted, with each further week being worth something like 2/3 of the week more recent. The only thing about the calculation that's changed on Zelaron in years is the number of weeks counted.