What is The Artificial Intelligence (AI) We're Living With

Artificial intelligence has always been a hot topic. The problem of creating a machine that can think, make its own decisions and at the same time lacks human limitations, has always aroused controversies. Because what is the artificial intelligence, what do we know about it? Is it going to be human's best friend or maybe the worst enemy? We all remember what the infamous Skynet has done to our planet in Terminator series, right? We can also recall this nasty feeling of a cold shiver running down our spines when Neo has woken up from the Matrix.