&gt; What impressive programs are written in Lisp?<p>I&#x27;d only call this anecdote, but one or more benchmarks assert that cl-ppcre, common lisp&#x27;s perl-compatible regex implementation, is faster than any other, include perl&#x27;s.<p>The larger question I&#x27;m intuiting from your post, &quot;Why doesn&#x27;t language power make a difference in practice?&quot; I don&#x27;t have an answer to.