That&#x27;s the old Kernighan quote[1]:<p>&quot;Everyone knows that debugging is twice as hard as writing a program in the first place. So if you&#x27;re as clever as you can be when you write it, how will you ever debug it?&quot;<p>[1] <a href="https:&#x2F;&#x2F;en.wikiquote.org&#x2F;wiki&#x2F;Brian_Kernighan" rel="nofollow">https:&#x2F;&#x2F;en.wikiquote.org&#x2F;wiki&#x2F;Brian_Kernighan</a>