Arik Sosman of the Huffington Post writes:
Facebook has recently launched a limited beta of its ground-breaking artificially intelligent assistant called M. M's capabilities far exceed those of any competing AI. Where some would be hard-pressed to tell you the weather conditions for more than one location (god forbid you go on a trip), M will tell you the weather forecast for every point on your route at the time you're expected to get there, and also provide you with convenient gas station suggestions, account for traffic in its estimations, and provide you with options for food and entertainment at your destination.
Facebook employee David Marcus explained in the product announcement that M is, in fact, human-aided. However, M itself wouldn't admit it, so I tried to expose that human element.