Archive | January 2013

Paul pours an imaginary cup

Pay attention to the drummer.


Tea and Quantum-Physics

Such interference effects lie at the heart of many quantum phenomena, and find a natural description in Hilbert’s mathematics. But the phenomenon may go well beyond physics, and one example of this is the violation of what logicians call the “sure thing” principle. This is the idea that if you prefer one action over another in one situation – coffee over tea in situation A, say, when it’s before noon – and you prefer the same thing in the opposite situation – coffee over tea in situation B, when it’s after noon – then you should have the same preference when you don’t know the situation: that is, coffee over tea when you don’t know what time it is.