Errors:
*Typo on the “hard problem” at 14:11, it should be a/(b+c) + b/(a+c) + c/(a+b) = 4
*Typo-turned-speako: The classification of quasithin groups is 1221 pages long, not 12,000. The full collection of papers proving the CFSG theorem do make up tens of thousands of pages, but no one paper was quite _that_ crazy.

Thanks to Richard Borcherds for helpful comments while putting this video together. He has a wonderful hidden gem of a channel: https://youtu.be/a9k_QmZbwX8

You may also enjoy this brief article giving an overview of this monster:
http://www.ams.org/notices/200209/wha…

If you want to learn more about group theory, check out the expository papers here:
https://kconrad.math.uconn.edu/blurbs/

Videos with John Conway talking about the Monster:

More on Noether’s Theorem:

The symmetry ambigram was designed by Punya Mishra:
https://punyamishra.com/2013/05/31/sy…

The Monster image comes from the Noun Project, via Nicky Knicky