&gt; against non-obvious features (there&#x27;s a word for this, I can&#x27;t remember it)<p>Are you thinking of &quot;affordance&quot;? <a href="https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Affordance" rel="nofollow">https:&#x2F;&#x2F;en.wikipedia.org&#x2F;wiki&#x2F;Affordance</a>