But isn't this iterative learning? The first time you use Google Now you generally have some very weak recommendations, but as you filter the results (by addin

But isn't this iterative learning? The first time you use Google Now you generally have some very weak recommendations, but as you filter the results (by adding apps, expressly saying 'yes' or 'no' to cards), it gets better. By and large there's a lot of ML behind the scenes, but it's also supervised learning. It gets better with more data.