This is the Principle of Equivalence which says you can talk about what you don't know just as long as it is 'equivalent' to what you do know. Equivalence means there is no discernable test to distinguish between. The result of Newton's tests on linear motion do not apply to streptoid motion. There are certain machines where there are no internal changes to indicate the flow of power through or from the machine. The Absurdity of Knowledge relates to the fact that Knowledge is an interpretation of reality.
Peace can become war, and love can become knowledge.
The truth is that we do not understand the nature of the world we live in. We can become what we want to become through the nature of our thought. Of course, that could return us to the Garden of Eden, but if we again become fascinated by the allure of the fruit of the Tree of Knowledge we expel ourselves from the peace of God's garden into the excitement of the growth and build-up of various civilisations. Each society is based on an interpretation. And when the limitations of that interpretation express themselves in an eventual devitalisation of the society so generated, the civilisation fails, and after an interregnum is replaced by another.