Part 4, and the point of the whole series: personal assistants bring AI to the masses.

Chatbots haven't truly been adopted by everyday people, and almost nobody will pay for one. A chat window is a destination you have to remember to visit. An assistant is different - it lives in your messages, your calendar, your day, and it does things instead of just answering things.

That's where Muse and Instinct come in: AI built for everyday, every-hour usage, distributed through the apps people already live in. The leaderboard can freeze all it wants. The next hundred million users won't arrive through a chatbot. They'll arrive through an assistant that was already in their pocket.