ANU VC (and Nobel physics laureate) Brian Schmidt responds (via Twitter) to reports a US university based its COVID-19 student return to campus on modelling by two physicists. “Exactly why I ask my public health experts to design our response. While almost everything is ultimately physics, a university is not a spherical cow.”  Glad, he cleared that up – (it’s a joke about researchers working on improving milk production, “assume a spherical cow, in a vacuum”).