--- a/rdf-concepts/index.html	Mon May 28 17:28:54 2012 +0100
+++ b/rdf-concepts/index.html	Mon May 28 21:33:18 2012 +0100
@@ -253,6 +253,15 @@
     that describes the denoted resource by means of
     <a title="RDF statement">RDF statements</a>.</li>
     </ul>
+
+    <p class="issue">This should explain better that IRIs in RDF play
+    two roles—as globally unique identifiers in a graph data model that
+    describes resources, and as
+    starting points for RESTful interaction with these resources
+    (like elsewhere in the Web).
+    This specification is only concerned with the first aspect.
+    Alignment between the two aspects is generally important, but out 
+    of scope for this spec.</p>
 </section>
 
 <section id="vocabularies">