3 ms·Firstborn. Should I put that on my résumé? ;-)by lapcat 3y agoFirstborn. Should I put that on my résumé? ;-)fmajid 3y agoJung's theory of birth order is about as scientific as the rest of his crackpot beliefs, and psychoanalysis in general.danaris 3y agoJung isn't the only one who has theorized about birth order making a difference in development.