All information is subject to human bias. A historian could interpret the cat carvings on the egyptian wall as proof they worshipped cats, while another could say they just thought they were super funny and the carvings were their version of the internet.
He expects the lower classes to be good examples for the higher classes
In the 1800s they used steel plows and other new forms of technology. The Steel Plow was used for farming to break up tough soil without soil getting stuck to it.
C. Using a specific model to prove the earth moving around the Sun.
