Genealogy is all the rage. Identities are constructed by tracing branches of the family tree across generations. DNA testing is increasingly used to follow branches of family trees and establish national, ethnic, and racial ancestral proportions. Can the science deliver? How do DNA differences contribute to the construction of identity? How does ancestry more generally contribute to the construction of identity?

Welcome to you

I was never very interested in genealogy in past years. The family I knew were enough, sometimes more than enough. My initial foray into genealogy was with the sceptical outlook of a philosopher of science tasked with preparing a conference talk for the biennial meeting of the International Society for the History, Philosophy and Social…