If you don't clone something, you can either disable access or share. As you can't disable access to most of that stuff, you've got to share it and once you share it, you've got to protect it and still run the risk of ending up in an inconsistent state thanks to race conditions and lack of locks.
I do not think your blame of the fork emulation is correct.
Jenda
Enoch was right!
Enjoy the last years of Rome.
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