Turn on audio description even if you can see fine — it makes TV better

In an Agatha Christie adaptation, a character forces a polite grin. An offscreen voice murmurs: “Her smile doesn’t reach her eyes.” That line isn’t in Christie’s book. It was written by an audio describer — one of the mostly anonymous writers who narrate visual details for blind and low-vision viewers in the gaps between dialogue. A.J. Jacobs, the self-…