<p><BR/>Replying to:<BR/><DIV CLASS='Discussion_PostQuote'>Using this philosophy, we would still be wandering around the South African plains naked, scavenging for food. Yet here you are conversing with people from around the world with modern technology. Pfft!!!Mankind will disappear from the Universe of we do not spread out from this One Rock, & do it pretty quick too. I definately want to know my children & grandchildren have a future. <br />Posted by boris1961</DIV><br /><br />That is a silly analogy. We've filled up this planet because of our nature. We won't change that much in another 2,000 years. We should think twice or thrice about tampering with LIVING worlds. I'm all for branching out into space. By the time we are able to branch out as all us science/space guys imagine, we won't <em>need</em> to ransack any living planets we come across. We will be able to transform non organic raw materials into man-made biospheres. There is plenty of raw H, He, C, N, O, Fe, Al, and all the other elements we'll need to do whatever we want.</p><p>In the present and near future, we will use the space and resources of our own vicinity to set things right, here on Earth first before we'll ever get to other star systems. Our own role in this may not be as anthro-centric as we imagine. It's possible that humanity's ultimate destiny is to not just bring ourselves, but life in general to the millions of dead worlds that most certainly exist throughout space. Much like bird droppings and coconuts traveling on ocean currents help to seed formerly barren volcanic islands with plant life, humans will seed dead worlds and perhaps nearly dead or what we percieve as stagnant worlds with life.</p><p>The reason your analogy is silly is because humans discovering and traveling to an alien biosphere is unprecedented. For all we know, as soon as we took our space helmets off, there would be exotic microbes that would drop us dead like a sack of flour.</p><p>We will explore these living worlds for the sheer pleasure of exploration. To know more of what is knowable, and to learn what is possible. Thereby seeing our own world anew.</p> <div class="Discussion_UserSignature"> <p>ZenGalacticore</p> </div>