He was quickly coming to realise that he did not have the necessary manual dexterity to be a talented experimenter and when the professor who was lecturing to him on the theory of functions suggested that he read Lebesgue 's paper Leçons sur l'intégration et la recherche des fonctions primitives he immediately became fascinated.
Siya ay mabilis na darating sa realise na siya ay hindi kinakailangang magkaroon ng manwal na kagalingan ng kamay upang maging isang matalino tagapagsubok at kapag ang mga propesor na lecturing sa kanya sa teorya ng pag-andar iminungkahi na siya basahin Lebesgue 's papel Leçons sur l'Integration et la mabini des fonctions primitives siya agad-agad na naging nabighani.