Quantum informatics for cats and people

This is a continuation of the recent article “Quantum informatics with a human face” .
We will try to understand whether the impossible calculations cost the programmer for nothing, find out what happened to Schrödinger's cat, find out whether the result of the impossible calculation can be made the only material result of running a quantum program and look inside the quantum cooler.
The anthropic principle, the Zeno effect and the enzyme in the role of the Turing machine