mbers are not
&gt; &gt; &gt; &gt; classified in
&gt; &gt; &gt; &gt; &gt; &gt; either of these ways. (Note in particular that a set
&gt; &gt; of physical
&gt; &gt; &gt; &gt; &gt; &gt; things is not itself physical.) The basic test is to ask
&gt; &gt; &gt; &gt; whether the
&gt; &gt; &gt; &gt; &gt; &gt; thing in question is best thought of as something that
&gt; &gt; &gt; &gt; can be said to
&gt; &gt; &gt; &gt; &gt; &gt; be 'happening' or whether one thinks of it as something
&gt; &gt; &gt; &gt; that endures
&