RE: [xri] V4 of Requirements & Glossary doc

["Wachob, Gabe" <gwachob@visa.com>]

Drummond-
	Comments below:

112: "based predominantly" - I'd say "Internet identifiers" rather than "Internet infrastructure"

127: "Tim Berners-Lee and associates" could be interpreted as a perjorative statement (though i know you don't mean it that way). Better say "Tim Berners-Lee and other architects of the WWW" or something similar.

131: Where does the number 3 billion come from? The number of URI-identified resources is probably infinite, actually. Every web page, every email address, every *geographic location* (I believe there is a GEOURL effort going on somewhere), etc. I think maybe you mean HTTP URIs here, but even there, its hard to quantify numbers since HTTP URIs are becoming "semantic" and thus don't correspond to concrete resources. 

144: Is the motivation for URNs really abstractness? If so, why? I think URNs *tend* to be abstract because anything non-abstract tends to be non-persistent. What makes URNs distinct is the persistence and its a happy (though not totally random) side-effect that they tend to be persistent. I'm about to propose something about de-emphasizing URN-ness (completely) and (in parallel thought) I think maybe talking about URNs here may be a little distracting. 


171-172: I've never seen URN's (as a formal concept) nested in URIs. 

	-Gabe