In this chapter and the following one, the responses to the question “What are the main trends over the last 30 years?” are presented. The complete list of topics mentioned is long and varied. I have attempted to bring topics together to make it more coherent, but the responses could have been structured in many diﬀerent ways. Not all informants who mentioned certain trends are mentioned all the time. In some cases I have taken notions from various informants and combined them. The trends are structured into three sets. In this chapter the focus is on theoretical and methodological aspects of AL and in the next chapters topics related to psycholinguistics, sociolinguistics and education are presented. Chapter 8 discusses the dynamic turn.