What do you believe in that hasnt been proven to exist?

[AFTT47]

I believe that there is an almost p=1 probability of the existence (past or present) of intelligent life elsewhere in the Universe.

I also believe that the reason we have never made contact is that the nature of intelligent life is to destroy itself.

I on the other hand, believe intelligent life reaches the point where it has the power to alter itself via genetic engineering and/or synthetic augmentation. They soon become something we could not distinguish from gods. We would have about as much success trying to comprehend their goals as ants would have trying to understand ours. The expansionist view of the so-called Fermi Paradox is incredibly simplistic. It assumes beings of our level of intelligence. By the time a species is capable of practical interstellar travel, they will have become something far, far, greater.