classical is anything that predates the start of my PhD and the older I get then the more classical it was

when the information matrix is singular then should it be called the 'bagel variance' (ie a sandwich with a hole)?

Tbh I never understood midterm exams in the US. Why not just two weeks of exams at the end of the academic year? I always felt that I only really understood the content when revising on my own during the spring break 🤷🏼‍♂️