Duolingo CEO Luis Von Ahn wants you addicted to learning

1450.054 - 1471.925 Luis Von Ahn

I think the answer is yes, but I think the operative term is somewhat. They are somewhat interchangeable. So we've tried to build our technology stacks so that you can interchange them. But the reality is that you interchange them and you start getting wonky stuff because you probably spent a lot of time really testing your way into the right queries. You may have done some fine-tuning, etc.