&gt; and the final series converges.<p>Or not, and we yell &quot;look behind you!&quot; and then dump the infinities out the window.<p><a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Renormalization" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Renormalization</a>