To be multilingual is to be utterly uninteresting; most of the world's population is multilingual. Interesting, however, is what happens when multilingualism leads to language contact. The resulting innovations can be anything from a mere exchange of words to a shift in grammar or to the birth of an entirely new language — and how to define these innovations is a question linguists are still trying to answer. In this episode, Aaron talks with Philipp Krämer, a professor of linguistics at the ...