Enlightening and thought provoking. Simplicity though maybe the detail is hard reality. Would be an aid if tests and measurements were more expounded upon.
Possibly a follow up for "boomers", those who thouhgt of doing it my way did not work out as planned door changed considerably, will need to apply these principles or truths in a modified way may be needed.
A must read on bucklist before you die. everyone should learn how to managing oneself