i assume u would keep getting higher on and on the LD50. It can't be a waste because if the additional marijuana didn't build up higher concentrations in ur blood after a certain point no LD50 could exist.

think about it: if u eat 3 ounces ur gonna be hella higher than if u eat an ounce. and if u eat like 30 ounces, fuck ur gonna be higher than 3 ounces.