For close to 40 years, a simple little hypothesis has been quietly sitting in a corner of graph theory, minding its own business. Known as the “bunkbed conjecture”, it always seemed kind of ...

Sungho Choi has criticised Michael Strevens’s counterexample to David Lewis’s final theory of “token” causation, causation as “influence.” I argue that, even if Choi’s points are correct, Strevens’s ...