Wonderful thread. I just saw Universe (Multiverse stuff) on the history channel and thought of y'all. They seemed so sure of themselves. I would guess it isn't the fame factor, but that they have been this scientigous for quite some time.
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Originally Posted by Ken G
"If general covariance remains a gauge symmetry after quantization, then there is no Hamiltonian, no energy, no time evolution, and no locality. This seems utterly unphysical to me."
I call it semi-sensical from my perspective because I have at least been introduced to all the words used, though I certainly cannot comment on the accuracy of the remark.
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I agree. Ug. Is this what becomes of corn when converted to high octane? There best fight is with recondite!
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It would not be a physics discussion without the observations of the planets-- and you may be sure that said observations would appear rather prominently in any such discussion between those individuals. That's the point.
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What a great analogy! Tycho had to rely on Kepler to do the very difficult calculations of his unique and accurate data. [Kepler had refused to work under Tycho, insisting to only work with him.] Kepler loved his polygons, but he stuck with the data. The worst variance in the data from a circular orbit for Mars was 8 arcminutes, IIRC. He stuck with the data, and won the honors.
Even the Church was interested in observations to support their religious views! The Jesuits were some of Kepler's best friends, and he was Lutheran.