Why does Cannonical stop with high school? Why not go all the way back to nappies/diapers? The questions write themselves: "Please indicate how frequently you

Why does Cannonical stop with high school? Why not go all the way back to nappies/diapers? The questions write themselves: "Please indicate how frequently you cried between the ages of 1 and 2. Cries per day is the desired unit" "How good of a napper were you between the ages of 2 and 4? Did you talk back to the teacher when naptime was scheduled? Did you fake your naps?"