Know what always tripped me out about the first Back to the Future:
When Marty comes back to the present and sees himself hop in the Deloreon in the timeline where Doc Brown puts the bulletproof vest on the Marty that hops in the car and presumably goes into the past is the son of the confident, successful George McFly that has Biff wash his car, not the socially inept weak George that Biff takes advantage of (Prime Marty). What happens to that other version of Marty?
Free energy exists, whether you understand the concepts of it or not. Just because you can't understand it, doesn't make the person talking about it crazy. Your metal hat comment was just a way to dismiss my claim and marginalize it.
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In order for any life to matter, we all have to matter
It's almost impossible to do a time travel story without plot holes like this. They were less aware of it in the 80's, of course, but it's not like more recent fare has done much better.
Probably the only sincere attempt I've seen to depict it realistically is Primer. And that movie is an unmitigated clusterf--- of confusion, because that's exactly what would happen with split timelines and such. Like, imagine Prime Marty stops the other from traveling back. What then? Then do similar permutations for about 11 iterations, with multiple versions of characters in an ever-increasing number of timelines. And after a certain point you can't even be sure which version you're seeing anymore. That's basically Primer in a nutshell.
I don't think the lack of innovation has as much to do with giving money away to other nations as aid as much as the effort by domestic corporations to milk a technology for all it's worth, coupled with the lack of public demand. Solar panel technology has been around for decades and every house isn't equipped with them, and that's due to a combination of most citizens either not finding them economically viable or they simply don't like the way they look on their homes. The issue is the priorities of the populace.
Solar panels are pricey and it takes X amount of years of using them to return in savings what they cost to install, even with states like CA where you get tax breaks and discounts.
Homeowners who own homes they rent out are likely not going to put the money into a rental, as there's no real incentive, leaving that aspect of housing completely out.
Give it time though, the technology will improve and the prices will drop. Read somewhere that they now have transparent solar panels, which means your windows can double as energy producers.
So, seeing as how your OP is "Happy BttF Day!" and your next post is an unprovoked rant on energy and innovation, what was the real reason for this thread?