<div dir="ltr">
<span style="font-size:12.8px;text-decoration-style:initial;text-decoration-color:initial;float:none;display:inline">> The map itself is an abstraction</span>
<br><div>
<div id="gmail-m_-6610542254601930507AppleMailSignature" style="font-size:small;text-decoration-style:initial;text-decoration-color:initial;background-color:rgb(255,255,255)">> What about thermal and hypogenic caves? </div><div id="gmail-m_-6610542254601930507AppleMailSignature" style="font-size:small;text-decoration-style:initial;text-decoration-color:initial;background-color:rgb(255,255,255)">> There is no sense for in this discussion. </div><div><br></div>We use map as model of cavity shape. Using model we do a measurements on model.<br class="gmail-Apple-interchange-newline"></div><div>Using correspondence between model and reality we make conclusions.</div><div>It is the scientific approach. Thats it.</div><div><br></div><div>Cave genesis is not point here, selecting projection of map is the process of selecting more appropriate cavity shape model.</div><div>Most adequate model is 3d, but for some sort of caves - 2d is enough adequate.</div><div class="gmail_extra"><br></div></div>