Kotlin's Vision for Immutability

Immutivist is the next big frontier for us. We've published last year this big kind of design document just notes on our way forward on radio types and all the immutability things. Of course we'd love to see more support like for value types for example in JVM but it's not something that's stopping us from doing. Even if you are having to pay high price and performance for it, there are lots of people who are willing to pay this price as long as they're cold. They're willing to pay the price of slow performance just because immutability gives them safety.