Fair enough. I'd be more inclined to believe you than me.

I'd say it would be eaiser to use Gravity instead then. And I've got a nice picture in my head of a giant ball clacky thingy, you know the balls that clack against each other? You know the thing with 5 metal balls, you pull one up and let it fly into the three middle ones and the one on the other side swings out...

Yeah, so, picture of a giant one of those...really big. I'd say as tall as a block of flats...which is only around 20 floors around here...and someone stood on a ledge holding a ball I don't know how many times bigger than them, and harnessing that to get the energy...

I'm rambling, sorry.