Poseidon computer system detects drowning girl and alerts pool lifeguards, probably saving her life – Watch the video footage to see how cool and useful this is. It is hard to have any kind of job where you are forced to sit and watch something all day. But not only do computers not have the problem of boredom and split attention, they also have the ability to see things people can’t. A fine supplement to the human lifeguard presence at public swimming pools.