, why are so weird for directories?

Read perms let you list the filenames in the directory but nothing else (e.g.. not contents of files nor metadata like size or file owners).

Write perms let you add/delete/rename files in that directory, but only if exec perms are also present.

Exec perms let you read or write to files that already exist in a directory, but not list the names nor change the names. Hope you already know the filename you're after.

... WHY??

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