Well, well, but the mods were elected by us and they sort of listen to us, and I suspect they'll read threads like these too. But, actually, I think I've been convinced on the Perception argument. After all, he needs to take in data from around him to do the calculations, and the precision of those calculations is based on how well he can collect data, and the Pretercog rules already allow for more power if you're given data directly, so... Perception it is.
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Indefinable, the eternal exception, zero is the number of God, who does not exist but defines everything.