<div dir="ltr"><div dir="ltr">On Mon, Jul 27, 2020 at 10:32 PM Stuart LaForge via extropy-chat <<a href="mailto:extropy-chat@lists.extropy.org">extropy-chat@lists.extropy.org</a>> wrote:<br></div><div class="gmail_quote"><blockquote class="gmail_quote" style="margin:0px 0px 0px 0.8ex;border-left:1px solid rgb(204,204,204);padding-left:1ex">
But what about the Popular Mechanics article? You have an <br>
astrophysicist claiming to have seen and worked with materials and <br>
"vehicles not of this earth"<br></blockquote><div><br></div><div>1) Argument from authority is a logical fallacy. If he isn't producing any actual evidence, his claims are just claims, doesn't matter who he is.</div><div><br></div><div>2) Arguably, meteoric iron and moon dust (refined or not) are materials "not of this earth". Technically, one can make a case that vehicles made with any non-zero amount of these materials are therefore "vehicles not of this earth".</div><div><br></div><div>But mostly point 1. </div></div></div>