Allen-Edmonds is keeping its shoe manufacturing business in the United States by investing in new machinery and creating new processes. The strategy is a gamble and the outcome is uncertain. To cut costs and improve efficiency, the company's old assembly line is being replaced by a system of employees working in groups, with each person doing several jobs, and each trained to do the others' tasks. Allen-Edmonds is using .

Because of the violent nature of the sport, professional american football players are at risk of suffering concussions (or brain injuries) during the violent collisions that occur between players during the game. violent collisions involving hits to the head are particularly risky. suppose the commissioner of the national football league (nfl) institutes a rule requiring players to wear a new, lighter helmet that is designed to reduce head trauma during collisions between players on the field. while the new helmets the probability of a concussion resulting from each individual collision, at the same time the new helmets could also give football players an incentive to play more , which could potentially the amount of violent collisions and thus the number of concussions suffered by nfl players, all else equal.