Yawn. 1980 Australian military document? Really? If you want to play google-the-source, we can do that. I can see you skipped over quite a few documents which say exactly what I'm saying if you say, google for "airplane air conditioning." Maybe while you're at it, google "heat exchanger."
I really think we have different definitions of critical thinking.
I asked:
Let's do a bit of critical thinking. It's -50 outside. Does one need to heat the cabin, or cool the cabin?
You replied:
If an airliner could simply transfer the frigid air that is outside the cabin when at cruising altitude to cool the inside of the cabin, then aircraft would not need multiple sophisticated a/c systems.
Might I assume that was your answer to my question?