Sperm whale PS: If a person assiduously absorbs knowledge and information for 24 hours, his brain can store 25 times as much knowledge and information as books in Beijing Library. A diligent thinker only uses 1% of brain cells, which shows that the capacity of the human brain can also be called "small universe". The memory capacity of the same person is amazing. If the memory capacity of the human brain is converted into bits, then a person's brain can receive 65.438+0 billion bits of information every second. Even if 99% is forgotten and only 1% is remembered, the information that people can remember in their lifetime is 10/6 power, that is, a gigabyte. Note: A Beijing is 65.438+billion times of 65.438+billion, which means that the memory capacity of human brain is 65.438+billion times higher than that of computer.