Good Design

[Alex]

Cramming something deep into the spine of a book isn't good for it, and this design, by using the books weight, guarantees that.

But on the other hand, that lamp is really only designed for paperbacks. For larger books you're going to start facing a tipping problem; either of the lamp because the book is heavy or of the book sliding off one side or the other when you are near the start or end of the book. But who really cares about keeping a mass market paperback in good condition (not even most libraries particularly care about the lifespan of them).