Can computers think? Since the 1950s we have been trying to make computers that mimic the brain's complex neural networks. There has been success with specific challenges, such as when Deep Blue beat chess champion Garry Kasparov in 1997, but consciousness and general intelligence remain long term goals. More recent developments such as IBM's question answering system Watson, and Apple's intelligent personal assistant Siri have focused on answering user's closed questions.
Hundreds of the world’s leading artificial intelligence experts issue warning of the dangers to humanity with continued development into autonomous weaponry like armed quadcopters, likening it to gunpowder and nuclear weapons.