Xiang Xiaotong said this as she took a diagram out of the box.
On the left side of the diagram was a cartoon human brain. On the right were numerous glass tubes packed tightly together like a honeycomb, with brain cells drawn inside each one.
"The human brain is a complex whole that gradually formed over tens of millions of years of evolution. But Teacher Bai's brain cells are stuffed into individual components like this, artificially designed like car parts. They're nowhere near as complex as a human brain."
"The human brain can't be replaced at will, but Teacher Bai's Brain Cell Tubes can be swapped out smoothly. When they become old and unusable, they can simply be removed and reinstalled. They also have some stray thoughts of their own, but those thoughts are nothing more than insignificant ripples. Through the design of the overall architecture, we can give Teacher Bai different modes of thought," Xiang Xiaotong said.
"Exactly!" Song He nodded. "Let's take another example: rain!"
"Many people experience peculiar feelings on rainy days. They also get drowsy and sleep especially well. Why? There are two common explanations."
"One explanation is that changes in air pressure and temperature on rainy days alter the amount of oxygen people breathe, triggering a chain reaction in the temperature receptors throughout the body. At the same time, various substances are released when certain fungi in the soil are soaked by rainwater."
"Another explanation is an evolutionary remnant from ancient times. Modern humans' bodies aren't much different from those of primitive humans; we've retained many bodily structures from millions of years ago. In ancient times, humans had to guard against attacks by wild beasts. During torrential rain, even vigorous beasts worried about getting wet and catching colds, so they usually wouldn't roam around. Humans