As we go on, I'm sure you're learning more and more about the

rational brain, especially in verse 2, when we compare it to a little man who can talk to himself. The metaphor is very vivid. In fact, all three human brains can be considered little brains, although we only refer to them as "two little brains" -- "primitive" and "modern", or "emotional" and "rational". It's classified that way for a reason. On the one hand, the instinctual and emotional brains are both so old and have similar characteristics (powerful but lacking intelligence) that we call them "primitive little people"; On the other hand, since the emotional and rational brains are the only ones we can perceive and actively influence, it is more accurate to describe the workings of the brain as "emotional person" and "rational person". Why is it so hard to influence the instinctive brain? Because the instinctual brain is fundamental, it operates automatically without the involvement of consciousness. If you don't understand this sentence, think about when we sleep. When we are asleep, our consciousness and emotions are "switched off", but breathing, heart rate and other functions are automatically performed, which are controlled by our instinctive brain. It can be seen that the instinctive brain belongs to the subconscious mind, which is outside the control of the conscious mind. If anything, it would probably be to remind yourself to take deep breaths in an emergency, because this action calmes the brain out of the fight-or-flight instinct and puts the rational brain back in control. With that said, let's go back to the protagonist of this episode, the cerebral man. As subjects of our learning, what are the tools that rational people use to learn? The answer is "working memory". The so-called working memory is the part of the brain that makes instantaneous and conscious processing of the information being processed. Simply put, it is the mental resources available to the rational brain. The human brain looks very powerful, but the amount of information that the conscious mind can process is not very large, about 7±2 [illustration], some people more, some people less, but all around 7. If you're hearing this theory for the first time, you might think I'm talking nonsense, but I don't need to explain the science to convince you. If you don't believe me, try memorizing

meaningless numbers or unfamiliar item names. In the short term, you can usually only remember about seven, more than that. Similarly, in life, you can usually only remember six or seven things at once; When your working memory is saturated, if you receive a new piece of information, you can only remove an old piece of information. That's why you're thinking about drying the washing machine, but when the Courier calls you forget about it because it's been removed from your working memory. For the sake of illustration, I'm going to use 7 as a base. Just like there are 7 days in a week, we can imagine that the rational person has 7 balls in his hand, which represent our mental resources. In fact, as humans, we all have the same allocation of brain resources. No one has a more special brain, but different people do use their brain resources differently. It is not hard to imagine that good man the real advantage is that they will be able to let the brain for a long time the seven balls at the same time focus on one thing, to ensure the high quality and efficiency to study, and some are bad grades, probably because their brains in a ball in play background music, a ball trying to decide what to eat in the evening, a ball in the worry about the coming exam... There are probably only three or four balls that are really used for learning. What's more, the balls that aren't learning may interfere with or suppress the balls that are learning, which may result in a 7 -- 3 < 4 effect, while the balls of a good learner may concentrate together to produce a 4+3 > 7 effect. You can think about how that mental difference adds up over time. Therefore, the ability competition between people is, in the final analysis, the competition of the utilization of mental resources. The more you can develop the brain power of a small ball, the more competitive it will be.

The good news is that brain power differences are not insurmountable, and as long as we continue to observe the characteristics of the brain, we can tune and train the seven little balls. To understand this better, think of your brain as a room with seven little balls in it. If you look closely at them, you will see that some of them are very "light", as light as a ping pong ball bouncing around the room, very confusing. Because the balls represent out-of-touch thoughts, like an unrealistic fantasy, a scene from a TV show, an event you're looking forward to, a loop of music playing in the background... So, a lot of people seem to be sitting there studying, but their thoughts are churning up and down like gas in a hot pot, and they only want to think about something fun and light. This state of mind is bound to make people distracted and unable to stay focused on studying. You will also find that some of the balls are "heavy", like iron balls in the corner of the room. This weight comes from great pressure, such as panic caused by homework accumulation, worry and fear caused by unit tests, anxiety caused by rivals surpassing, anger and sadness caused by other people's misunderstanding... These heavy emotions are like a rock in the brain, won't go away. We can neither dispel them nor touch them, so we have to let them occupy our mental resources and interfere with our learning.

As we go on, I'm sure you're learning more and more about the

rational brain, especially in verse 2, when we compare it to a little man who can talk to himself. The metaphor is very vivid. In fact, all three human brains can be considered little brains, although we only refer to them as "two little brains" -- "primitive" and "modern", or "emotional" and "rational". It's classified that way for a reason. On the one hand, the instinctual and emotional brains are both so old and have similar characteristics (powerful but lacking intelligence) that we call them "primitive little people"; On the other hand, since the emotional and rational brains are the only ones we can perceive and actively influence, it is more accurate to describe the workings of the brain as "emotional person" and "rational person". Why is it so hard to influence the instinctive brain? Because the instinctual brain is fundamental, it operates automatically without the involvement of consciousness. If you don't understand this sentence, think about when we sleep. When we are asleep, our consciousness and emotions are "switched off", but breathing, heart rate and other functions are automatically performed, which are controlled by our instinctive brain. It can be seen that the instinctive brain belongs to the subconscious mind, which is outside the control of the conscious mind. If anything, it would probably be to remind yourself to take deep breaths in an emergency, because this action calmes the brain out of the fight-or-flight instinct and puts the rational brain back in control. With that said, let's go back to the protagonist of this episode, the cerebral man. As subjects of our learning, what are the tools that rational people use to learn? The answer is "working memory". The so-called working memory is the part of the brain that makes instantaneous and conscious processing of the information being processed. Simply put, it is the mental resources available to the rational brain. The human brain looks very powerful, but the amount of information that the conscious mind can process is not very large, about 7±2 [illustration], some people more, some people less, but all around 7. If you're hearing this theory for the first time, you might think I'm talking nonsense, but I don't need to explain the science to convince you. If you don't believe me, try memorizing

meaningless numbers or unfamiliar item names. In the short term, you can usually only remember about seven, more than that. Similarly, in life, you can usually only remember six or seven things at once; When your working memory is saturated, if you receive a new piece of information, you can only remove an old piece of information. That's why you're thinking about drying the washing machine, but when the Courier calls you forget about it because it's been removed from your working memory. For the sake of illustration, I'm going to use 7 as a base. Just like there are 7 days in a week, we can imagine that the rational person has 7 balls in his hand, which represent our mental resources. In fact, as humans, we all have the same allocation of brain resources. No one has a more special brain, but different people do use their brain resources differently. It is not hard to imagine that good man the real advantage is that they will be able to let the brain for a long time the seven balls at the same time focus on one thing, to ensure the high quality and efficiency to study, and some are bad grades, probably because their brains in a ball in play background music, a ball trying to decide what to eat in the evening, a ball in the worry about the coming exam... There are probably only three or four balls that are really used for learning. What's more, the balls that aren't learning may interfere with or suppress the balls that are learning, which may result in a 7 -- 3 < 4 effect, while the balls of a good learner may concentrate together to produce a 4+3 > 7 effect. You can think about how that mental difference adds up over time. Therefore, the ability competition between people is, in the final analysis, the competition of the utilization of mental resources. The more you can develop the brain power of a small ball, the more competitive it will be.

The good news is that brain power differences are not insurmountable, and as long as we continue to observe the characteristics of the brain, we can tune and train the seven little balls. To understand this better, think of your brain as a room with seven little balls in it. If you look closely at them, you will see that some of them are very "light", as light as a ping pong ball bouncing around the room, very confusing. Because the balls represent out-of-touch thoughts, like an unrealistic fantasy, a scene from a TV show, an event you're looking forward to, a loop of music playing in the background... So, a lot of people seem to be sitting there studying, but their thoughts are churning up and down like gas in a hot pot, and they only want to think about something fun and light. This state of mind is bound to make people distracted and unable to stay focused on studying. You will also find that some of the balls are "heavy", like iron balls in the corner of the room. This weight comes from great pressure, such as panic caused by homework accumulation, worry and fear caused by unit tests, anxiety caused by rivals surpassing, anger and sadness caused by other people's misunderstanding... These heavy emotions are like a rock in the brain, won't go away. We can neither dispel them nor touch them, so we have to let them occupy our mental resources and interfere with our learning.