 Many had seen Dilthey's work as an outright attack on experimental psychology, Ebbinghaus included, and he responded to Dilthey with a personal letter and also a long scathing public article.Amongst his counterarguments against Dilthey he mentioned that it is inevitable for psychology to do hypothetical work and that the kind of psychology that Dilthey was attacking was the one that existed before Ebbinghaus's "experimental revolution".Charlotte Bühler echoed his words some forty years later, stating that people like Ebbinghaus "buried the old psychology in the 1890s".