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@de_Selby
Sure, except it wasn't. You won't find a single serious book on the Concorde making any such claim. For sustained Mach 2 flight, NASA, North American, McDonnel-Douglas, Bristol, Handley-Page, Hawker Siddeley, Nord Aviation, Sud Aviation, Dassault - and Antonov and Aerospatiale - ALL came to the same conclusion: the so-called "slender delta".
Most of our bikes look the same. They are clearly not copies!