He&#x27;s probably referring to stuff like this:<p>&gt; Do Not Copy-Paste<p>&gt; You must type each of these exercises in, manually. If you copy and paste, you might as well not even do them. The point of these exercises is to train your hands, your brain, and your mind in how to read, write, and see code. If you copy-paste, you are cheating yourself out of the effectiveness of the lessons.<p>(from the intro of &quot;Learn Python The Hard Way&quot; ( <a href="http:&#x2F;&#x2F;learnpythonthehardway.org&#x2F;book&#x2F;intro.html#do-not-copy-paste" rel="nofollow">http:&#x2F;&#x2F;learnpythonthehardway.org&#x2F;book&#x2F;intro.html#do-not-copy...</a> ))