The more I hear about math post schooling, the more interesting it becomes.  As a teacher, I’m a bit perplexed as throughout my checkered math learning career all of this cool stuff remained unmentioned.  All I remember is the misery and frustration of learning largely esoteric shite, that once ‘mastered’ was quickly purged once test time was over.  Anyhow, latent math anxiety aside, enjoy this clip about the weirdness of fractals.  :)