Two things occur, first is the analogy to how rarely large organic brains have evolved primarily due to their calorific needs. Second if we ever want to kill AI we can just sever the water supply and let it melt.
I don't know about this but I do know I have been worried about something and then forgot what I was worried about but still continued to worry in a general non-specific way out of obligation to the process.
The communicator already is and HAL that everyone thought would take 200 years is here now. The science fiction future we dreamed about as children has become a self fulfilling prophecy. For good or bad we are in it now, right up to our necks.
Does it have to get up after four hours sleep to work all day and go to IKEA at the weekend or does it just mess around it's whole life in a warm ocean eating seafood and thinking gentle echinoid thoughts.
You sound like you need a soma holiday.