To be clear: I speaking somewhat in jest, and I'm not really talking about academic versus industrial programming. I'm snarkily referring to the fact that that

To be clear: I speaking somewhat in jest, and I'm not really talking about academic versus industrial programming. I'm snarkily referring to the fact that that many developers didn't see the value in a lot of Scala's features and labeled Scala as an impractical, over-complicated academic language. And yet: Kotlin has seen great success by spoon-feeding Java devs a lot of those very some features (with the benefit of second-mover advantage). In terms of actual examples, I'll point to JEP 443, linked in the Java 21 article that kicked off this topic. That feature comes from Scala, by way of Kotlin.