Letter from Egypt: On the Technique of Cow Dung Rolling
I just heard from one of my former students who is working in Juba, South Sudan, who wrote: “I am trying to explain the ‘snowball’ technique of sampling, which is a nightmare for Africans who have no clue what a snowball is. So I described the process of rolling a snowball and how it gets bigger and bigger, and ask them if there is anything with which they are familiar that when rolled grows larger and larger. In that way...