Stainless said:
Yes, a slow and therefore costly process and not guaranteed to be 100% accurate,
This is exactly what we do - and you are right, 100% accuracy is not guaranteed. In fact, we have never guaranteed perfection. What we _do_ guarantee is satisfaction, and if a book does not meet someone's standards, we will replace or refund without quibble.
100% perfection in this field is not possible on 100% of books - you are holding us to a standard that _no_ other gaming publisher is held to. Every publisher produces (or should produce) errata, and I believe that with free books swaps and compensation for larger errors, we have gone far further than any other publisher I can think of to correct mistakes.
Put it another way, if companies like WotC (with, what, 150-odd people in their RPG department) and Games Workshop (with over 2,500 employees at last count) cannot produce books without (sometimes extensive) errata, I do not believe you should expect to see anything different in a publisher much, much smaller.
I think it is fair to say we achieve a good 98% on this score, and we always strive for that other 2%.