According to Wiki,
Artificial intelligence (AI) is the intelligence of machines and the branch of computer science that aims to create it. The field was founded on the claim that a central property of humans, intelligence—the sapience of Homo sapiens—can be so precisely described that it can be simulated by a machine. This raises philosophical issues about the nature of the mind and the ethics of creating artificial beings, issues which have been addressed by myth, fiction and philosophy since antiquity. Artificial intelligence has been the subject of optimism, but has also suffered setbacks and, today, has become an essential part of the technology industry, providing the heavy lifting for many of the most difficult problems in computer science.
As it applies to this website, Artificial intelligence would be, essentially, the simulation of the human brain to make medically sound decisions. As stated above, that is a highly charged issue.
But is it possible? Can Big Data become so efficiently large enough, and efficiently harnessed to know more than any human brain? This is a question that probably will not be answered in this lifetime, but it will certainly always be very controversial, and challenging.