This chapter surveys Paul Gilroy's academic legacy: the debates that his theories have generated, and the influence he has had on other scholars. It summarizes the ongoing critical dialogue that surrounds Gilroy's concept of diaspora, commenting on the revisions proposed to the model formulated in The Black Atlantic. The chapter shows how Gilroy's model has been applied to the 'Irish Atlantic', as an example of how Gilroy's theories have transformed areas of academic research outside African diaspora studies. Gilroy responded to Helmreich's archaeological excavation of the word in the essay 'Diaspora and the Detours of Identity'. Critic Christine Chivallon engages with The Black Atlantic by questioning whether Gilroy differentiates between the object of his study and the principles and criteria used to analyze that object. During the seventeenth and eighteenth centuries many poor Europeans migrated to Britain's North American colonies as indentured servants.