&gt; There&#x27;s one thing severely lacking in lisp: compile time type checking!<p>Lisp <i>does</i> have compile-time type checking; see my comment: <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11699581" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11699581</a>