In the 1960s, Richard Lee discovered that in order to find enough food to survive, Ju/'hoansi foragers had to work September 25, 2018 Anthropology In the 1960s, Richard Lee discovered that in order to find enough food to survive, Ju/'hoansi foragers had to work Answer: about 20 hours per week per person Learn More : Share this Share on FacebookTweet on TwitterPlus on Google+