Question

The Scientific Revolution’s advances in knowledge about the physical world led philosophers and other thinkers to believe that if reason structured the physical world, then reason might also be found in the world of human activity and government.

Answer 1

Philosophers and other thinkers had many different ideas and propositions about the possible connection between reason and the physical world. One of them is the one you've posted, however, that doesn't mean it's universally recognized or true.