That the initial print run of new books is always hardback, and you need to wait about a year before there's a paperback version, by which point you've forgotten why you wanted to read it in the bloody first place.
Ah yes, we have the technology to send software updates to Voyager 2 in 18 hours, but apparently sending a 2MB file to public libraries in less than a decade is beyond our comprehension. What a world.
That the initial print run of new books is always hardback, and you need to wait about a year before there's a paperback version, by which point you've forgotten why you wanted to read it in the bloody first place.