It's correct and healthy that we should be stress testing the preview material. We're four months away from final layout, approval, and .pdf release. Then another 5 months for expected delivery of the physical product, which I do hope includes the expectation that issues with the initial.pdf release will be brought up and addressed. There WILL be typos, silly mistakes, and things that need clearer wording. Hopefully not too many, but if the customer base gets in to it in those first couple of weeks there's a chance they can be smoothed out before the file is sent to the printer.
I will say also that different people will require different things from the game. And that is good and proper. But those with better understanding of the science and technology may need to polish it up to their own satisfaction. The core product needs to be usable by an average gamer, and narrative convenience is important.
