Could you say more about this?

One of the things that interests me about nominal AI applications is the extent to which they're sort of a Mechanical Turk or what I've heard called Artificial Artificial Intelligence. By which I mean it's sold as computer magic, but most of the magic is actually humans sneaking in a lot of human judgement. That can come through humans directly massaging the output or through human-driven selection of results. But I've also been wondering to what extent natural human intelligence is getting put in at the lower layers of the system, like feature engineering.