Can you have a namespace with the same name as a local variable? If not, then they could have used `/`. Of course then you cannot know what an expression means

Can you have a namespace with the same name as a local variable? If not, then they could have used `/`. Of course then you cannot know what an expression means without executing the program, but I'd assume they already have a few cases in there (with variable variables and so on; it's bin a while since I've used PHP productively). It would also have been possible to just reuse `->`, then namespaces look a lot like static objects. Or the double colon `::` which was already used in some contexts.