<h3>Stage I - Basics - The 3 sources of Truth</h3>
<p>There are THREE (3) basic sources of data that troggle manages.
<ol>
<li>Open the page <ahref="">Expo 2022</a> in a new tab in your browser.
<li>Scroll down to the second table with 4 columns with headings "Date", Logged trips.." etc.
<li>The important 3 columns are, for each day:
<ul>
<li>The <b>trips</b> or escapades recorded in the <ahref="/handbook/logbooks.html">logbook</a>.
<li>The <b>surveys</b> recorded in <ahref="/expofiles/documents/surveying/survex-guide.pdf">survex files</a>.
<li>The <b>raw data notes</b> scanned from survey notebooks and stored in <ahref="/handbook/survey/newwallet.html">plastic wallets</a>.
</ul>
<li>The 4th source of data is the master list of <b>who</b> was on the Expo. This is shown in the top table calendar. The data comes from the <ahref="/folk/index.htm">folk list</a>.
</ol>
<li>If you don't yet understand how expo uses any of the words above, click on the handbook links above and read the explanations.
<li>If you are completely puzzled, read the <ahref="/handbook/intro.htm">Expo introduction</a>
and <ahref="/handbook/survey/index.htm">Cave surveying and data management</a>