My friend Mary sent me this link to a video by Vi Hart about why $\pi$ is wrong. The video is funny, and the rest of her site is wonderful, engaging, and worth checking out. There is a nice article about her in the New York Times.

The originator of the “$\pi$ is wrong” idea is Bob Palais, and much more about his idea is here.

For some similar high-powered creativity, check out the techno-kinetic wave sculptures of Reuben Margolin here (thanks to my student Justin Couto for telling me about this).

And if you like mathematically inspired digital art, and you’re in the Niagara region, check out Bill Ralph‘s latest exhibit, A Mathematician Breathes. (He’s also a beloved and fantastic mathematics professor.)

(This post first appeared at my other (now deleted) blog, and was transferred to this blog on 22 January 2021.)