<p>If you're seeing this page and this message, then:
<ul>
<li>you are offline.</li>
<li>this site is offline.</li>
<li>the "internet" connection on your end or this site's is limited somehow and so you can't connect.</li>
<li>you decided to look at the source or something and found this page.</li>
<li>the Earth has been destroyed or nuclear war has occured, threatening the integrity of the DNS system.</li>
<li>Contingency Iota has been initiated.</li>
<li>your browser is being weird.</li>
<li>I broke something somewhere quite badly.</li>
<li>your internet connection is too high-latency - the timeout on requests is 5 seconds.</li>
<li>???</li>
</ul>
This site uses a service worker to provide a limited offline mode, but it doesn't work for everything (dynamic pages, ones requiring a bit of server logic, the comments system, pages which haven't been cached), so you are being shown this instead.