LogFAQs > #968761525

You can actually figure out the reason right now (as well as solve the majority of the series), though obviously most people wouldn't yet, as figuring out Beatrice's motives is a huge part of the mystery as a whole.

Funnily enough the earliest someone solved the series (with proof after the fact we can verify) is Episode 2. Like, as the whole series was coming out, so its not possible they got spoiled, someone made an almost entirely correct guess as to the overall solution of the series and there is an archive of it. I think it was one of the early topics on the Animesuki forums, though I couldn't tell you which off hand (though my guess would be the Episode 2 release discussion).