The principal problems there were mathematical, involving ballistics, gun and artillery control, range finding, calculating leads for moving targets and so on.... there are suggestion he may have been involved in code breaking.
Ang punong-guro ay may mga problema sa matematika, na kinasasangkutan ballistics, baril at control artilerya, saklaw ng paghahanap, pagkalkula leads para sa paglipat ng target at kaya sa.... may mga payo siya ay maaaring kasangkot sa code ng pagbubukas.