So is Windows (certified even!), which is exactly my point. It's not a practical and useful abstraction. If anything, it's even more problematic, because Windo

So is Windows (certified even!), which is exactly my point. It's not a practical and useful abstraction. If anything, it's even more problematic, because Windows is "wierd" and people go out of their way to create special approaches to handle it. For macOS, too many developers think it's "just posix, ya know, like Linux" and then walk into horrible compatibility edge cases.