The Problem. When Galileo died in 1642, there were still two competing schools of free fall. The Galilean School upheld Galileo’s law of free fall, which may be posed either…
Could You Have Defended Galileo?
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An Enormous Test of Bell’s Inequalities
Nicolas Gisin (and colleagues) have executed an enormous test of the Bell-inequalities! Their experiment will span laboratories in the cities of Geneva, Satigny, and Jussy. I believe that makes it…
Visualize a Black Hole at the Event Horizon
This cute little animation shows the causal structure around a classical black hole in an interesting way. The perspective is that of a body orbiting just outside the event horizon:…
How Far Out Is Quantum Theory Really?
The quantum world is commonly conceived of as (i) wildly strange, and (ii) far removed from everyday experience. But (i) certainly need not be true: many find quantum theory quite…
PHIL-∞: An Infinite Seminar?
Can every philosophy seminar be correctly completed in either finite time or infinite time? Here’s a (gödelesque) answer in the negative, in the form of a philosophy seminar I’m calling…