In terms of AI, look, we really are in a unique time in history. AI is going to allow us to teach significantly better. And I also believe that the way people learn is just going to change.

I think that in the next few years, we are going to see quality of teaching that is as good as a one-on-one tutor. We're going to see that. But not only that, not only is it as good as a one-on-one tutor, but it will be as fun as a mobile game.

We have this feature video call with Lily. It keeps getting better and better at being able to practice your conversation. And so we can see improvements in how well people are learning.

In terms of what are the top priorities that will allow us to get to 100 million daily active users by 2028, it's a number of things... And then the third thing that we're going to be doing is just investing a lot in our new growth engines. That's our new subjects. So in particular, chess has grown quite a bit.

As for cost, as you think about our COGS, the key thing to keep in mind is that we plan to share AI features with a far greater portion of our user base.

We said back then that as AI costs came down, we would experiment putting features in the different tiers because ultimately, our goal is to be able to teach as many people as possible.