Artificial Intelligence, otherwise known as AI is something of an enigma. It's always going to be here in 6 months or so but it never actually arrives. The thought of a computer that thinks for itself is quite scary for many people. At the moment computers are rule based machines that simply follow a set of rules (often very complex) to reach an outcome.
AI, is the next step, where a computer is able to develop complex rules for itself and act on them. Elon Musk, a tech entrepreneur recently voiced his concerns over where artificial intelligence is going is not alone - many AI researchers share his fears, see http://www.computerworld.com/article/2840815/ai-researchers-say-elon-musks-fears-not-completely-crazy.html, and for an understanding of what AI actually is click this link http://www.merriam-webster.com/dictionary/artificial%20intelligence
Seeing as after many years we still haven't been able to achieve many people believe that AI will never really materialise, but where does the divide between complex rule based machines and AI actually lay? Computers are certainly developing and becoming more complex in the jobs they can do, such as flying drones and bomb disposal machines, but all they are doing is following a set of rules and processing information according to what data they are processing. They are not actually thinking, and that's the difference.