Several books and movies exploited our thrills (and fears) about the future and its technology.
Can we just laugh off dramas like "Rise of the Machines"?
Maybe not, according to ethicist Wendell Wallach. In his book A Dangerous Master, looks at technologies that already exist, and explores some of the ethical dilemmas they raise.
Think drones and computer stock trades, for starters.
The author joins us for an extended discussion.