See my comment here [0] with its genuine, but as yet unanswered question:<p><pre><code>  If you hit space, how do you know
      you end up seeing every slide?
</code></pre>
Every seems to be chipping in with these navigation hints, and that&#x27;s great, but no one seems to answer my question.  The site seems to be a triumph of presentation over usability, and I&#x27;d really like an insight into the minds of those people who think it&#x27;s all obvious and usable.<p>For example, someone else said[1] that if you hit ESC you get an overview.  How do you find that?  What if you don&#x27;t have an escape key, such as on my tablet?<p>I&#x27;m not trying to be grumpy or anti-anything, I&#x27;m trying to gain an insight into how people think this is a good thing, and to provide, in return, an insight into why I think it&#x27;s unusable.<p>[0] <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11653447" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11653447</a><p>[1] <a href="https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11653323" rel="nofollow">https:&#x2F;&#x2F;news.ycombinator.com&#x2F;item?id=11653323</a>