You've got to love a crackpot inventor though ;-)

I do.

Without them, we wouldn't even have time travelling DeLoreans... and that's just for starters.

Whilst most of the stuff on YouTube is surely just varying degrees of misleading nonsense, there is always scope for the next major evolutionary break-through or techno-sociological paradgim shift to come, like a bolt from the blue, from some of the kind of conceptual mutation and madness that exists on the fringes of accepted scientific and engineering orthodoxy?

Well, I think it's a fun prospect that it could at least...

...well, fun, if you overlook the sense of desperation that also seems to me to pervade such efforts...

...and ignore the socio-economic factors that imbue that sense... such as the grip that is apparently still held on human destiny by just a few greedy hands.

Still... Laser Fusion @ Lawrence Livermore National Laboratory

"If you put your mind to it, you can accomplish anything." - Marty Mcfly