concerning the question of how h a lorentz first had arrived at the lorentz transformation i e concerning his 'testamony' as e mmacro calls it i found now a relevant remark in k f schaffner space and time in lorentz poincar and einstein divergent approaches to the discovery and development of the special theory of relativity in machamer p k and turnbull r g eds motion and time space and matter interrelations in the history of the philosophy of science ohio state university press chapter seventeen p lorentz thought that einstein had arrived at experimental results that were in essential agreement with those that he lorentz had obtained and that einstein had 'simply postulated' what he had 'deduced with some difficulty and not altogether satisfactorily from the fundamental equations of the electromagnetic field ' schaffner's citation is taken from p of lorentz's the theory of the electrons'' of how is it possible to deduce a correct result in a not altogether satisfactory manner without knowing the final result in advance