While what you said is true, it sort of misses the point. The thought experiment demonstrates that there is some quantity being added to a system each time the

While what you said is true, it sort of misses the point. The thought experiment demonstrates that there is some quantity being added to a system each time the demon opens or closes the gate, and that quantity is information. Now we have a relationship between information and entropy. Edit: I think you might be speaking to my point that in the end it evens out, and that natural selection in turn does create entropy even as its generating information.