Einstein Relatively Easy

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An interesting paper on the long an tortuous Einstein's journey through the tensors.

"For much of the period between 1912 and 1916 he was truly lost in the tensors, quite completely on the wrong path, accompanied by erroneous reasons he claimed to be fundamental.
And yet, quite singularly, in the course of a month he abondoned his errors and their justifications.
The moral, perhaps, is that a certain fickleness is more conducive to theoretical progress than is any abundance of conceptual clarity -- at least if one is Einstein."

Lost in the Tensors: Einstein's Struggles with. Covariance Principles, 1912-1916





"The essence of my theory is precisely that no independent properties are attributed to space on its own. It can be put jokingly this way. If I allow all things to vanish from the world, then following Newton, the Galilean inertial space remains; following my interpretation, however, nothing remains.."
Letter from A.Einstein to Karl Schwarzschild - Berlin, 9 January 1916

"Quantum mechanics is certainly imposing. But an inner voice tells me that it is not yet the real thing. The theory says a lot, but does not really bring us any closer to the secret of the 'old one'. I, at any rate, am convinced that He is not playing at dice."
Einstein to Max Born, letter 52, 4th december 1926

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