Read one of the above posts on how a "theory" comes to be. It is the exact opposite of existing with or without being able to test it. What you have is an untestable idea which by definition can't even count as a hypothesis because its not testable. And as far as being sure about the randomness, its as best as we understand molecular orbital theory. there's a lot involved with it but yeah, as far as i know in literature and in books on the subject, even with things like dipole moments there is complete randomness within the particular "level" of the cloud, or orbital it's in. Nothings ever sure, but its the best we got for now.