Namespaces and folder structures in c# solutions: how should folders on disk be organised?

Question

First off, let’s agree that namespace should match folder structure and that each language artefact should be in its own file.

(see Should the folders in a solution ma

Answer 1

"First off, let’s agree that namespace should match folder structure and that each language artifact [sic] should be in its own file."

Funny, that's how packages work in Java. I always thought that breaking the link between namespaces and directory structure was considered one of the improvements that C# introduced. Is that not true? (Forgive my ignorance, I'm a Java person.)