Why couldn't two identical AIXI-type agents recognize one another to some extent? Stick a camera on the agents, put them in front of mirrors and have them wiggle their actuators, make a smiley face light up whenever they get rewarded. Then put them in a room with each other.
If you're suggesting this as a way around AIXI's immortality delusion, I don't think it works. AIXI "A" doesn't learn of death even if it witnesses the destruction of its twin, "B", because the destruction of B does not cause A's input stream to terminate. It's just a new input, no different in kind than any other. If you're considering AIXI(tl)... (read more)
If you're suggesting this as a way around AIXI's immortality delusion, I don't think it works. AIXI "A" doesn't learn of death even if it witnesses the destruction of its twin, "B", because the destruction of B does not cause A's input stream to terminate. It's just a new input, no different in kind than any other. If you're considering AIXI(tl)... (read more)