This proposal implements clock offsets, but does it support continuous time scaling? One clock-handy use case would be to run your programs really slow or fast (or backwards!), for testing purposes.
What use-case would you have for this? Making sure your program runs properly in the near presence of a black hole?
Sorry, I honestly didn't mean to be snarky. It was a genuine question. I couldn't really see the real-case justification for testing a clock that slowed down, sped up, or went backwards. But you're right, malfunctioning clocks would be an example.
