Quantum computer science for cats and humans

This is a continuation of the recent article "Quantum computer science with a human face . "
We will try to understand whether the impossible cost the programmer for free, find out what happened to the Schrödinger cat, find out whether it is possible to make the result of impossible calculations the only material result of running a quantum program, and look inside the quantum cooler.
Anthropic principle, Zeno effect and enzyme as a Turing machine