Actually, it is not.
DarkCookie has a full plan on what each player spawns with each character depending upon the phases of the moon, the order of insemination, and the historical price of tea in China. That is why the game is over 1 GB, a good third is allocated for nothing more than the storage of this relational database. This is also the reason why the tech update is taking so long, DC is still computing all the permutations for the coming year, cross-referenced to each individual player. It's a tough job, but someone has to do it.