&gt;
&gt;
&gt;
&gt; I sympathize with Phil Jackson's goal, but I don't like the terms
&gt; "regular" and "irregular":
&gt;
&gt; &gt; One other point to make is that the concept of "contest" is related to
&gt; &gt; "game", which many people (Wittgenstein, Rosch, Lakoff, ...) argue is an
&gt; &gt; "irregular concept", i.e. not susceptible to a single, logical
&gt; definition,
&gt; &gt; and needing to some extent to be described by a collection of examples,
&gt; &gt; exceptions, prototypes, etc. This ties in w