Dear David Wolpert ,
As you said:
Inference devices are physical machines that obey the normal rules of mathematics and logic. The only a priori restriction on them is that they exist in the same physical universe as the system they want to know about.
/PS this metarules field or metauniverse is mentioned by Laura Mersini, ask her /
So if:
It is proved that it's impossible for one inference device (device A) to both know its own answer to an arbitrary question and to also know the answer to the same question by a different inference device B
My point:
This show up one practical questions if I need to run universe, i need to have best possible Control and knowledge from inside and outside.
I am creator, I know that can not be perfect for 100 percent but with high probability. High probability means good control or feedback to my management
then my universe is stable, and all my ideas are transformed to real one well
Best possible means avoid interference at all, minimise to total minimum of interference, means interference device probably is not controling, measuring every state just measuring, controling underlying laws.
Questions:
Are we living in universe constructed best possible to be controlled, measured and predicted by interference device ?
Thanks
Jan