In the latest Numberphile, Matt Parker discusses his birth year being 1980.
I asked Matt for a picture of him as a baby to go in the video, which he duly delivered.
But Matt (visiting his childhood home at the time) did even better, supplying this before-and-after comparison which was not seen in the video.
Reward Matt's public humiliation by checking out his book, Things to Make and Do in the Fourth Dimension, now available in paperback.
And here's a playlist of Matt's Numberphile videos.