Book 19 on my Kindle, The Atrocity Archives by Charles Stross.
Good, funny, fast, mundane-occult-scifi with flashes of usefully thoughtful bits.
This is true:
"Cybernetics and game theory won them the Cold War, so paying for philosophers is militarily more sensible than paying for an extra company of marines, don’t you think?’
"Let’s not get too technical without a whiteboard"