Due to a production error, a March 22 Users misidentified a photo of John Green as Hank Green. The photo has been replaced with one of Hank Green.

In a March 20 Users, Nitish Pahwa misstated that Conan O’Brien’s Late Night show first began airing its “Walker, Texas Ranger lever” bit in the 1990s. The segment kicked off in the 2000s.

Slate strives to correct all errors of fact. If you’ve seen an error in our pages, let us know at corrections@slate.com. General comments should be posted in our Comments sections associated with each article.