--- a/rdf-concepts/index.html	Wed Dec 18 08:37:42 2013 -0800
+++ b/rdf-concepts/index.html	Wed Dec 18 17:49:23 2013 +0100
@@ -244,9 +244,9 @@
     A very brief, informal, and partial account follows:</p>
 
     <ul>
-      <li>IRIs have global scope by design. Thus, two different appearances
-        of an IRI identify the same <a>resource</a>. RDF is based on this principle
-        and violations of it might lead to inconsistencies or interoperability problems.</li>
+      <li>By design, IRIs have global scope. Thus, two different appearances of an IRI
+        <a>denote</a> the same <a>resource</a>. Violating this principle constitutes
+        an <a href="http://www.w3.org/TR/webarch/#URI-collision">IRI collision</a> [[WEBARCH]].</li>
 
       <li>By social convention, the
         <a href="http://www.w3.org/TR/webarch/#uri-ownership">IRI owner</a>