Haven’t tried it but probably useful. Not impressive given that it’s powered by people. But the trick is in the data this provides to Facebook.
The idea here is, you can ask it any question, not just the set of questions that it’s capable of. The thing that’s cool about this is it gives us a much wider training set, like what are the things people actually want it to help them [with].”Facebook
In other words, making it human-powered versus machine-powered allows Facebook to get a more authentic glimpse at how people want to use the product.