John Baez on Cospans of Finite Sets


Ironically, this whole thing is really about how to design software for the Internet. See John Baez on Symmetric Monoidal Categories A Rosetta Stone and Noson S. Yanofsky on Diagonalization, Fixed Points, and Self-reference and Brendan Fong and David Spivak - Seven Sketches in Compositionality: An Invitation to Applied Category Theory. Somebody please tell Eric Yuan the CEO of Zoom and the idiots at Google who think the way to allow people to edit text is to open a hidden text widget on an invisible web page and redirect keystroke and pointer movement events to it. 

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