Machine-learning algorithms are responsible for the vast majority of the artificial intelligence advancements and applications you hear about. (For more background, check out our first flowchart ...

They started small, with algorithms that sorted only 3, 4, or 5 numbers at a time, but these are important because they’re used by algorithms that sort longer lists.

To clear things up, I drew you this flowchart on the back of an envelope so you can work out whether something is using AI or not. This originally appeared in our AI newsletter The Algorithm.