Oh. I'm adding it to my to-read queue then, and bumping Larry Niven up in the queue in general too. I've been meaning to read his works ever since I learned about Known Space / Star Trek connection.
I liked the Niven/Pournell books and I still think back to them often enough. The Mote in God's Eye and Lucifer's Hammer I think I read back to back. It's been a long time but I really enjoyed them when I was younger.