Christie’s described it in a news release as “ one of the most important scientific autographs ever to come to auction.” Most of the document was composed in June 1913, when Einstein was living in Zurich.... “ A glimpse behind the curtain of the wizard, so to speak, with its trials, its errors, its hesitations, its certainties.” Einstein later reworked the calculations and published the theory of general relativity under only his name in November 1915.... The contribution upended understanding