Take, for example, restaurant hygiene. The system learns which combinations of sometimes obscure factors are most suggestive of a problem. Once trained, it can assess the risk that a restaurant is dirty.
Governments are taking notice. A London borough is developing an algorithm to predict who might become homeless. In India Microsoft is helping schools predict which students are at risk of dropping out.
Afterwards they incorperated machine learning algorithms to make the computer learn itself. Slowly the computer simulated a helicopter and made the algorithm efficient and then tried it in real toy helicopter.