There is a big difference between Edison and what is going on with these projects. It's not merely that somebody found a way that it won't work, it's they showe

There is a big difference between Edison and what is going on with these projects. It's not merely that somebody found a way that it won't work, it's they showed the laws of physics will prevent it from ever being a reality. These projects are not billed as research projects. They are billed as "let's just make it" projects. Anybody can come up with an product that if made would change the world. The hard part is coming up with a feasible idea that will change the world. Not a single one of the projects listed in the parent ever produced a viable working prototype. They sold a promise they could not keep. Yet keep taking money.