title: Why doesn't this deref of a reference work as a one-liner?
body: <p>Given:</p>
  
  <pre><code>my @list1 = ('a');
  my @list2 = ('b');
  my @list0 = ( \@list1, \@list2 );
  </code></pre>
  
  <p>then</p>
  
  <pre><code>my @listRef = $list0[1]; 
  my @list    = @$listRef;    # works
  </code></pre>
  
  <p>but</p>
  
  <pre><code>my @list    = @$($list0[1]); # gives an error message
  </code></pre>
  
  <p>I can't figure out why. What am I missing?</p>