The second in a series of lectures by John Conway on the “Free Will Theorem,” will take place tonight at 8:00 PM in McDonnell Hall, room A02 on the Princeton University campus.

The subject of tonight’s lecture is The Paradox of Kochen and Specker. Conway will present a quantum mechanical prediction, the axiom SPIN, that shows via a simple geometric puzzle that some particle properties cannot exist before they are measured.

Earlier lectures in this series are available for online viewing here.

These lectures are sponsored by the Department of Mathematics, Princeton University, and Princeton University Press. They present the work of Conway and Simon Kochen which asserts that if experimenters have free will, then so do elementary particles. The Press will publish a forthcoming book on the same subject called The Free Will Theorem. For more information about the lectures, please visit the Princeton site.

The image here is a visual representation of what the lecturers present as an airtight mathematical theorem that rests on what they say are three unassailable axioms which happen to rhyme — spin, fin and twin.