 thing.</li>
<li>The Henderson example didn’t work like that. Instead, we had a sequence of layers of language. Each layer depended on the layers beneath it, but it couldn’t see their details because there was an abstraction barrier in the way.</li>
</ul>
<blockquote>
<p>So what you have is, at each level, the objects that are being talked about are the things that were erected at the previous level. <span class="citation">—<a href="https://ocw.mit.edu/courses/6-001-structure-and-interpretation-of-com