03 Feb

Starts With A Bang – Can You Get Something For Nothing?

Now, that’s what we know we can get, even from nothing. But there are many things we can’t do, either practically or theoretically: violate charge or energy conservation, decrease the total entropy of the Universe, or figure out where our initially inflating Universe came from. (Yet!) But we definitely can get something for nothing; quantum field theory not only allows it, it demands it. But it remains to be seen whether we can get everything for nothing. If we ever figure it out, I’ll make sure you’re among the first to know!

via Starts With A Bang – Can You Get Something For Nothing?. Physics does actually let you get something from nothing, another reason why you don’t learn your science from non-scientists.