My Reasoner Columns

Here is a list of the “What’s hot in uncertain reasoning” columns I have written for The Reasoner. As you will see, there are some gaps where I didn’t write a column, though I do try to write something most months. The archive of previous issues is available here. Each piece is pretty short, less than 800 words, typically, so these are pretty impressionistic sketches of the topics discussed.


  • May: Ban the term “Bayesianism”, since it doesn’t have a stable meaning
  • June: On Hannes Leitgeb’s The Stability of Belief and the methodology of formal epistemology
  • July: Framing real world decision problems
  • September: A call to arms for a theory of evidence
  • October: No column, but a “The Reasoner Speculates” piece on idealisation in formal epistemology and an analogy to “leaky abstractions” in software design
  • November: Deploring the state of the public understanding of science, and some thoughts on what we ought to do about it
  • December: Probabilities over rich(er) logical languages


  • January: No column, but an editorial on the rewards and challenges of the interdisciplinarity of work on uncertain reasoning; also, my interview with Greg Wheeler
  • March: A taxonomy of different kinds of uncertainty
  • April: Superintelligence, high cost low probability events and precaution
  • June: An appreciation of Gärdenfors’ Knowledge in Flux and Kreps’ Notes on the Theory of Choice.
  • July: Musings on Simpson’s Paradox
  • August: Uncertainty and sport
  • October: An appreciation of Potochnik, Colombo and Wright’s Recipes for Science.
  • November: On the domain of a probability function
  • December: An appreciation of Joyce’s A non-pragmatic vindication of probabilism


  • January: Discussion of some recent work on imprecise probabilities and scoring rules
  • February: Updating and the scope of conditionalisation
  • April: Quantum mechanics and computational complexity
  • May: Uncertainty about the designation of individuals
Seamus Bradley
Marie Curie Individual Fellow

I’m a philosopher at the University of Leeds.