I've thought about this (albeit not for that long) and it seems like you'd need a non-trivial revamp of how we communicate with the operating system. For instan

I've thought about this (albeit not for that long) and it seems like you'd need a non-trivial revamp of how we communicate with the operating system. For instance, allowing a library to "read from a stream" sounds safe until you realize they might be using the same syscalls as reading from a file!