I got it today. Why I missed this when I read the HTTP RFC document 5 years ago? Maybe I just ignored this part. Shit!

Here, please view Bill Venners article written in 2006 when he interviewed Elliotte Rusty Harold.

Here, to see what Elliotte Rusty Harold said about REST.

And here to see what is REST on wikipedia.

One thing to remember, there are 4 HTTP verbs, GET, POST, PUT, DELETE, not just 2. Someone killed the other 2 we don’t familiar with.