Impossible?

Virtually all human endeavor is, one way or another, connected to the quest for, or use of energy. Scientists and engineers have spent lifetimes in search of better, more efficient, methods for creating energy and channeling it for our purposes. The Holy Grail of research is finding a way, perhaps by cold fusion, to create more energy than it takes to produce the reaction. That may now have been, on a limited basis, accomplished. Imagine a world with cheap, unlimited energy. There would be literally no limits to what we could do.

But if they asked us old folks they just might get a difference...