I'm not sure I'd agree that having one language would be 'optimized' for the human mind. People often create DSLs due to the limitations of general-purpose lang

I'm not sure I'd agree that having one language would be 'optimized' for the human mind. People often create DSLs due to the limitations of general-purpose languages that are constrained by the large number of use-cases they must support; sometimes a DSL actually makes things less ambiguous, and therefore easier on our minds. To give a more concrete example: in Xamarin apps, you can technically do all UI in nothing but C#, just writing in the code-behind rather than in XAML. But as any Xamarin developer will tell you, this is a nightmare to work with. It becomes less clear what code is responsible for structure vs logic, and can be a real pain to test. Now that's not to say I completely disagree. For example, I think Tailwind gives you a sense of what it would be like if HTML & CSS were one and the same; keeping structure and style together makes a lot of sense to me. But I'd be wary of a one language to rule them all.