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I'd have the opposite reaction, I think: I'd want to learn a language because it introduced new concepts (and thus, terminology). It seems to me that it's a bit pointless to learn a language if you already intimately understand its theoretical underpinnings.

Yeah, the post went steeply uphill there. But you can actually understand the gist of most of what he's saying without actually understanding what it means that "views don’t chain. Instead, use view bounds". And somewhat further on, it goes downhill again.

In the simplest form, you can use Scala as a better Java. It's worth exploring it just for that comparison. And then there's much, much more you can do, if you want to, but it's also a very nice language if you don't try to add methods to the collections library and don't use dependent types.

So, a guy tries to solve a hard problem by using very powerful but very complex features that 99.9999999% of scala devs would never touch, and you take that as a reason to avoid scala? And then you come here to tell everyone how absurd your decision making process is?