I can't locate a website that exactly specifies the details of what this argument entails. In a nutshell, just from my own reading (not any actually reading from the book itself because I'm not going t waste 20 bucks on bullshit), it states that belief in god is rational and justifiable just as belief that other people have minds/other people's minds exist. I know this sounds like crap on the surface but I'm wanting to dismantle it at the core. I don't think this explicitly argues for god but I can't seem to get my hands around this. I'm sure it's been disputed before but I just can't find anything on the Internet that knocks it out to my satisfaction.
Don't keep your mind so opened that your brains fall out.