the 19th century the Shoshone lived in groups of about 25 people; therefore prehistoric
people who lived in the same area with the same economy also lived in groups of about
25.
b. Ethnographic data from all over the world show that hunter-gatherers live in groups
of about 25 people; therefore prehistoric hunter-gatherers in the deserts of Nevada also
lived in groups of about 25 people.
c. It has been demonstrated using ethnographic data that in a variety of different kinds
of environments a group of hunter-gatherers of about 25 people contains about 7 active
hunters and this number is sufficient to ensure that someone comes home with game
each day; increasing the number of hunters beyond 7 increases the amount of food
needed for the group but does not appreciably increase the chance that some hunter will
come home with game; thus we argue that prehistoric hunter-gatherers also lived in
groups of about 25 people.
d. Ethnographic data on highly nomadic hunter-gatherers in desert environments who
depend heavily on plants for food rather than on animals show that they live in groups
of about 25 people; since prehistoric foragers in the Great Basin deserts were highly
nomadic and heavily dependent on plant foods we argue that prehistoric peoples there
lived in groups of 25 people.
Multiple working hypotheses result when:
a. Several hypotheses potentially explain the same data.
b. Scientists have no sound hypothesis to test, but end up testing several equally
unlikely explanations in order to keep their research moving forward.
c. The simplest hypothesis cannot be falsified.
d. Scientists cannot produce replicable results with the most likely hypothesis.