Although Jacob and Johann both worked on similar problems their relationship was soon to change from one of collaborators to one of rivals. Johann Bernoulli 's boasts were the first cause of Jacob's attacks on him and Jacob wrote that Johann was his pupil whose only achievements were to repeat what his teacher had taught him.
Kahit na Jacob at Johann parehong nagtrabaho sa mga katulad na problema sa kanilang relasyon ay lalong madaling panahon upang baguhin mula sa isa sa mga tumutulong sa isa sa karibal. Johann Bernoulli 's boasts ay ang unang sanhi ng Jacob ang mga atake sa kanya at Jacob wrote na Johann ay ang kanyang mga mag-aaral na may lamang mga tagumpay ay upang ulitin kung ano ang kanyang guro ay tinuturuan sa kanya.