Many of the biggest problems we face in this moment as a society result from decisions being made by the hidden creators of our digital world — the designers, developers, and editors that create and curate the media we consume.
These decisions are not made with malice. They are made behind analytics dashboards, split-testing panels, and walls of code that have turned you into a predictable asset — a user that can be mined for attention.
They do this by focusing on one over-simplified metric, one that supports advertising as its primary source of revenue. This metric is called engagement, and emphasizing it — above all else — has subtly and steadily changed the way we look at the news, our politics, and each other. (Source)