"How could there be such a strange thing." Granny Shu frowned and said, "You can't hit eight poles on both sides."

Bao Yuan smiled, "There really is, after a while, the reason is very clear and reasonable, but mother-in-law, you can guess first." ”

"Is there a problem with the identity of the person who sells rock sugar mung bean soup in the city?" Qu asked softly.

"It's not." Bao Yuan said, "These soup sellers are ordinary people who keep to themselves. ”

"Is that the people who buy and sell mung beans in the city are in league with the thieves?" Zheng Shu also guessed.

"Not really." Bao Yuan then shook his head, "Those who buy and sell mung beans, those who grow mung beans are all fine." ”

Qu Shi and Zheng Shu guessed a few more, but they were all vetoed by Bao Yuan.

"Oops, can't guess, can't guess." Zheng Shu shook her head again and again, "I don't know which Java country is ridiculous, just make up one, and we have to think of a reason."

Bao Yuan continued, "It's very reasonable, Granny Shu, do you think that there are more people selling rock sugar mung beans, does it mean that the weather is hot?" ”

Both Qu and Zheng Shu nodded.

"When the weather is hot, there are more people who will sleep with the windows open at night, and there will be more people who open the windows at night, and there will naturally be more burglary." Bao Yuan said softly, and it was only at this time that Qu Shi and Zheng Shu suddenly understood.

Bao Yuan continued, "And this county order must recognize that there is a correlation between the increase in the number of mung bean soup sellers and the increase in theft, but there is no causal relationship, so that the correct solution can be come up." ”

"What kind of sophistry is this?" Zheng Shu frowned again, "No one would have linked mung bean soup to theft." ”

"Yes, Granny Shu, in this story, it's ridiculous to treat correlation as cause and effect, but in fact, once the occasion is changed, many people are doing it."

Bao Yuan learned Bai Ling's tone and paced around the room, "Let's take the incense sachet of Donglin Temple as an analogy. Why is it said that people who buy Donglin Temple sachets can not only get sick less, but also live longer? Could it be that the sachet has a miraculous effect? Not necessarily, the sachet is one or two, most of the people who can afford it are dignitaries, these people eat well, live well, don't have to work in the fields, and there are people to serve, and when they are sick and tired, they can still see the best doctor, then they will definitely live longer than those who can't afford to buy sachets.

"There is a correlation between buying sachets and living longer and getting less sick, just like the previous case of selling mung bean soup and raw theft, the real causal relationship here is that the material living conditions are good, so you can be in good health." Bao Yuan said with a smile, "If you mistake the relevant for cause and effect, and really believe that the sachet can keep you safe, for the rich it is to throw money and listen to it, but for the poor, it is empty of people and money." ”

Zheng Shugang wanted to reprimand Bao Yuan for being disrespectful to Buddhism, but Qu Shi laughed when he heard it, "Reasonable." ”

Bao Yuan saw the smile in Qu's eyes, as if he was very happy to listen, and acted harder.

She rolled up her sleeves and said with a smile, "What's more important is that if people can't distinguish between correlation and cause and effect, sometimes it's even easy to fall into trouble in big things." ”

Qu Shi smiled, "How do you say that? ”

For example, when the rooster sings the world white, it is only because the rooster crows in the early morning, whether it crows or not, the sky always has to brighten people, the so-called time is also fate, a person's achievements must not only depend on personal efforts, but also consider the course of history. If you really regard the power of fortune as the cause and effect in your own hands, you will have to be taught to be human sooner or later. ”

Qu Shi was stunned for a moment, only to feel that this sentence was like a thunderclap in his ears.

Zheng Shu also noticed the change in Qu's expression, and hurriedly interrupted Bao Yuan's words, stepped forward with a water cup, and said softly, "Niangniang, how old a child is Bai Lingcai, and when he can understand it, he will also have luck."

Qu Shi took the teacup, took a sip, handed the cup back to Zheng Shu, looked at Bao Yuan, and said, "Is she still talking?" ”

Bao Yuan calmed down and listened, and the three of them heard a faint human voice from outside the courtyard, although they couldn't hear what they were talking about, but they could vaguely distinguish that it was indeed Bai Ling's voice.

"Help me up." Qu smiled and said, "I'll listen to it too." ”

The curtain of the main hall was opened, and Zheng Shu and Bao Yuan walked out of it with one of them holding Qu's side.

I saw that in the courtyard, Bai Ling didn't know where to get a big wooden board, on which was fixed with nails on the rice paper, she held a candle in one hand, a charcoal rod in the other, and wrote a bunch of dense words on the cardboard, and most of them were numbers, Qu Shi couldn't see clearly for a while.

In front of Bai Ling, there were seven or eight palace maids and eunuchs, all of whom sat on the ground, and a few people in the front row held notebooks and pens in their hands, looking as if they were taking notes.

When everyone heard the voice behind them, they all looked back, and when they saw that it was the concubine, everyone got up and stood up.

"Leave me alone, you go on." Qu said softly.

Bai Ling bowed slightly, "Niangniang, I'm about to finish speaking, so I'm just a sentence or two away." ”

"Yes" Qu Shi felt a little pity, she sighed lightly, "Then you can finish." ”

Bai Ling listened, and turned back to look at the notes he had written full of cardboard, and what he had to say was actually finished.

"So in today's prologue, we talked a lot, from related cause and effect, some common data indicators, to a few simple experimental design methods, you should have a certain understanding of the so-called experiment. Back to our original theme today," Berry said, pointing to one of the earliest written books in the upper right corner of the cardboard, "as it was said in the beginning, psychology pursues four goals: describe, explain, predict, and control. All of this needs to be based on empirical research. ”

Bai Ling sighed lightly with some emotion, all the methods and means she talked about today are only focused on description and explanation, and these two things alone have already consumed the entire energy of many psychologists, not to mention the latter two.

"I'm sure you now understand why even some of life's simplest conclusions can be revisited once we have established a psychological perspective. Even if the profession you rely on for a living has nothing to do with the discipline in the future, the way of thinking she brings to you is just as far-reaching, at least it will make you less easily deceived. ”

Everyone laughed.

"Okay, that's all for today. The next class is the night after tomorrow, and Qinglian will copy tonight's homework to you later," Bai Ling put the candle back on the desk in front of him, "Then let's get out of class." ”

Qinglian, who was standing in front, suddenly shouted "stand up", everyone stood up, and Qu Shi on the side was so shocked that his heartbeat was a few beats faster, only to see everyone bowing to Bai Ling, and not reciting "Goodbye, Sir" very neatly, and most of the postures and voices were very unfamiliar.

Bai Ling coughed lightly, this is also a scene she needs to get used to, fortunately, it is already dark, and others can't see the restraint on her face at the moment.

She reached out and fanned out the candle on the table, her voice crisp and clear.

"Goodbye, classmates.".