When Neyman met Pearson in his father's Department in 1925 he did not realise that he was going through a sort of crisis. Karl Pearson 's work had been under attack from R A Fisher for a number of years and Egon later explained (see for example):
Kapag Neyman matugunan Pearson sa kanyang ama sa Kagawaran 1925 siya ay hindi realise na siya ay pumunta sa pamamagitan ng isang uri ng mga krisis. Karl Pearson 's trabaho had been atake mula sa ilalim ng RA Fisher para sa isang bilang ng mga taon at Egon mamaya ipinaliwanag (tingnan ang halimbawa):