Damani thinks that drinking energy drinks will increase the productivity of workers. He creates two groups of 50 workers each and assigns each group the same task (in this case, they're
supposed to staple a set of papers). Group A is given the energy drink to drink while they work.
Group B is not given the energy drink. After an hour, Damani counts how many stacks of
papers each group has made. Group A made 1,587 stacks, Group B made 2,113 stacks.