I guess this comment probably comes up every time Munroe&#x27;s common-word pieces come up, but I can&#x27;t help but feeling like you only really understand (or care) about the article if you already know enough about relativity.<p>&gt; The first idea is called the special idea<p>No, it&#x27;s not. Relaxing the rules to use key words (especially proper nouns) would go a long way. You can call it Special Relativity and still &quot;explain relativity using only common words&quot;, can&#x27;t you?<p>The result is that instead of an article explaining relativity, you end up with an article about relativity translated into a common-word subset of English.<p>Of course, I do enjoy decoding into normal English in my head as I read!