Quote Originally Posted by jwenting View Post
AFAIK the NSA and others use interstellar background noise as a feed for their generators, with filters applied to remove recurring patterns.
That's as random as it comes.

And indeed, you can't ever know if what you got from a brute force attempt to decrypt something encrypted using a one time pad is the original message.
That's what makes it as secure as it is.
But that's not my point. Point is, it IS possible to brute force the original message, you'd just have a very hard time knowing when you'd succeeded
You don't have a hard time knowing when you succeed, it's mathematically impossible to know when you succeed, as any message of the same length (or possibly less) can be retrieved from it and is undistinguishable from the original message. That's kind of what this entire topic is about.