1, benign stimulation of human brain development In the process of everyone's growth and development, the development of the human brain is accompanied by a person's life. If you encounter bad external stimuli and accidental injuries, your brain may stop developing. For example: intracranial hemorrhage, brain trauma, psychological malignant stimulation, unexpected shock, long-term anesthesia coma, isolation and so on. Wolf Child is a typical example. 2. The growth and development of the human brain is universal. Under normal reproductive and living conditions, everyone starts from the age of zero and continues until the brain death of an individual. The metabolic rate of human brain growth and development is different! Different age groups show different growth and development rules! For example, teenagers have good memory, middle-aged people have strong understanding ability, and the insight of the elderly is very distinctive. 3. The individual absolute difference of human brain development level. Because everyone's family environment, social environment and solitude environment cannot be exactly the same, this determines everyone's own brain development level and the realm that self-education and external education can reach. It must be different, different, and sometimes this difference is amazing. 4. After the individual differences of educational information sources enter the information civilization,