When he was in school, he learned a saying: "To learn without thinking is labor lost; to think without learning is perilous."
Thinking is always correct, since one can never guarantee not to make mistakes, and careful thinking can prevent many basic errors.
He fired batch after batch of pottery, recording in detail on white clay boards each time how much fuel was used, the ratio of clay mix, the thickness of the pottery, the size, the different shapes, and even the variations in weather and temperature, and then compared and summarized them.
These data, obtained with the consumption of large amounts of fuel and white clay, were transferred onto paper and turned into accurate patterns and hypothesized principles—
The newly acquired pen and ink were part of this process.
It must be said that using a pen worth tens of thousands is indeed different, writing with it is smooth.
It took nearly a month altogether.
