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My experience moving to Go from languages like Python and Ruby required a significant mind shift. I couldn't port my solution - I had to revisit the problem from the perspective of a Go programmer.

I think that is because you’re coming from a weak typed language to a strong typed one. I’d from the outset you have to have your types match you wouldn’t end up with so many types.

yeah, but python isn't statically typed. I'm comparing it to java.

It really shouldn't need any type annotations. A Hindley-Milner type system would have been more flexible and require no type annotations (as well as far less interface {} and unsafe casts), and still support everything Go has. The language as a whole seems to just commit all of the mistakes of C, except with garbage collection.