Peter Boghossian. That name is a blast from the past. I read a book by him against relativism years ago. It convinced me there are no good arguments against relativism! Let me find it.
Oh no it was Paul Boghossian. Unusual name, but different guy, apparently.
http://www.amazon.co.uk/Fear-Knowledge-Against-Relativism-Constructivism/dp/0199230412/
Currently I am reading this book to see if it can persuade me on the merits of "facts". I will report back if it does the trick. My interpretation at least.
http://www.amazon.co.uk/Faith-Versus-Fact-Religion-Incompatible/dp/0670026530/
Has anyone read it?