Please tell me it's to fund a massive expansion of Stripe Press! I want more books like The Dream Machine!

I just looked at your site and saw a book about Prince of Persia I hadn't seen before. I'm trying not to buy any more books because my stack is already too big but it's really tempting...

It's interesting though, how do you conceptually deal with these very large numbers? Do you equate it to some kind of internal standard of 'X employee years' or how does it work for you?