funny and a little bit terrifying is that sometimes (as humans) we do not even understand how it works, like this project from google that I've read about. They processed huge amount of medical data and found out that ML (Machine learning) can easily predict and point people that have a high chance to get schizophrenia and for our current medical knowledge we do not really know what the factors are, so many variables. Doctors and scientists could not figure it out, but ML did.