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Most technological advances came about because of WAR, always has always will, but that is no excuse for war. Many of the advances claimed by NASA were actually researched for the purpose of war and adapted to space travel. Teflon being one of them, researched for a better protective coating on small arms, though nobody wants to tell anybody that. That black paint on the Mattel rifle was NOT paint. As for many of the tech advances I lived for decades without them with no problem, and so did many others. But then we had heat we could afford and food on the table, but I can see where some may think that is a luxury we can do without to fantasize about space. I am all for it in good times, these are not good times and it is just wrong to make children starve, freeze, and suffer for some entertainment.