I remember reading about a theory expounded upon in the last chapter of Stardust (by John Gribbin), where he claims it's possible (although he urges you to thin

I remember reading about a theory expounded upon in the last chapter of Stardust (by John Gribbin), where he claims it's possible (although he urges you to think of it as a thought experiment) that Universes are born from black holes and that if that were so, there would be a sort of evolutionary pressure that would lead to Universes becoming better at creating black holes. This, in essence, explains away the curiously specific and precise numbers that are the foundations of our universe. They have evolved to support matter and energy in the form we are accustomed to seeing it, because that is the most conducive to the birth of black holes and baby universes..... /me takes it all with a pinch and a half of salt