God's Debris is for people who "enjoy having their brain spun around in their skulls." I think I can safely assume that this descriptive of a larger proportion of LessWrongians than the average population.
Without going too far into depth, I will say that it is one of the more enjoyable reads I've had lately, the philosophy the main character espouses is coherent and astoundingly seductive in it's simplicity - even as it requires you to tilt your head and squint a little to see it.
I read this book seven years ago, and I have vague memory that Adams was purposefully controversial rather than truth-seeking and, while maybe not out-and-out wrong, relies on misleading connotations to make his point. Based on my memory alone, I would downvote this. I'm curious well this memory holds up, so I'm holding off judgment for the moment while I skim it.
ETA: Wow, that was absolutely horrible. Meant as "serious philosophy" or not, that really failed. Perhaps for someone with no exposure to philosophy, it might useful to nudge them towards getting them to "think." Seems about as likely to be actively harmful, though. Adams is on the edge of clearing up some confusions, but then falls into worse ones himself.
Some gems:
You think?