It's seems to be meant as a supplement to the author's much longer piece "A Fight to Fix Geometry’s Foundations"[1] that was published the same day. That artic

It's seems to be meant as a supplement to the author's much longer piece "A Fight to Fix Geometry’s Foundations"[1] that was published the same day. That article links to this one in a sidebar. 1: https://www.quantamagazine.org/20170209-the-fight-to-fix-symplectic-geometry/ https://www.quantamagazine.org/20170209-the-fight-to-fix-sym...