Parishoners, partners and puzzled playwrights have written in to the professor's postbox this issue
Independent Sage's Christina Pagel, hyperbolic mindfulness and make-your-own Markov tweet feature in our autumn 2020 edition. Plus all your favourite puzzles & columns.
Alex Bolton plays noughts and crosses on unusual surfaces
A biography of Sophie Bryant
Blaise Pascal was driven to begin the mechanisation of mathematics by his father's struggles with an accounts book in 17th century France.
Matthew Scroggs spends too much time beating this arcade classic.
