Bill Unruh’s recent collection on black hole analogues begins, Deep beneath the great encircling seas of the Discworld lived a species of hyper-intelligent fish. (Unruh 2007, p.1) Unusual, but inspiring:…
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Roger Penrose came to Pittsburgh on Friday, presenting his new picture of cosmology. It was my first time seeing a Penrose presentation, and I was delighted to find it filled…
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The unfolding of time is typically described as a sequence of spatial regions: one region of space gets realized, and then another, and then another. For example: consider a region…
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There is a lot of literature about how it is that important successes in science apparently stemmed from false belief. Belief in the existence of caloric is a common example:…
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Sean Carroll of Cosmic Variance made his way to Pittsburgh on Friday. Sean and I managed to solve the problems of the Universe over lunch (more or less), before his…
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