Template:Are You Sure/December 24

• ... that mathematician Johann Benedict Listing (25 July 1808 – 24 December 1882) introduced the term "topology" in a famous article published in 1847, having already used the term in correspondence some years earlier?

• ... that Vera Rubin's's computation of Santa Claus' flight path unexpectedly revealed a new Gnomon algorithm function which computes the brightness of Rudolph the Reindeer's red nose?