Actually I thought his whole argument was down to "REST isn't a protocol the way HTTP is a protocol" -- look the "P" stands for "protocol" -- which (a) is true in some specific technical sense, and (b) isn't important.
I quote: "This style has no agreed protocol." and "The core missing pieces of any RESTful web service protocol are agreed standards on media type and link metadata." OK, so what?
> OK, so what?
Well, when you try to fill in the blanks you get one of these:
1) AtomPub, which is a relatively simple protcol but has very limited application
2) oData/WSDL, which are powerful but complex
Edit: I said "API", should have said "Protocol"