He thinks he's created Artificial Intelligence, and he needs someone to complete a Turing test to determine whether what he created is truly human. The Turing test is the definitive test of a machine's ability to exhibit intelligent behavior equivalent to, or indistinguishable from, that of a human. A human evaluator (in this case Nathan) judges 'natural' conversations between a human (Caleb) and a machine (Ava) that is designed to generate human-like responses.
The rest of the film is heady, but smart science fiction dealing with issues of ethics and technology, evolution and the role of humans on earth in the distant future. It's great sic-fi, and an exciting, well-paced film to boot. I would recommend it to anyone with a passing interest in science, or fiction, or tense and engaging movies.







