I Am a Big Winner in Life

H2547 Getting to the bottom of it? [[1/3]]

Why are manhole covers round?

This question is very classic on the Internet, with all kinds of stories, all kinds of scientific analysis, and all kinds of answers seem to even make sense.

In dormitory 307, An Liang asked this classic question.

“Wenshan, if I ask you to analyze why the manhole cover is round, what do you think?” An Liang looked at Lu Wenshan.

Lu Wenshan responded slightly embarrassedly, “Can I check the answer online?”

An Liang refused to respond, “If you can’t search for information online, what’s your opinion?”

“We have to learn to think independently, rather than passively receive answers.” An Liang added, “The answers on the Internet are the answers listed by other people, and they are just the result of other people’s thinking. We need to think about this issue by ourselves. s answer.

“Champion brother, gentlemen, you can also think about 13 specific reasons.” An Liang motioned for Ma Long and Shen Shizhong to also participate.

Lu Wenshan thought silently. He didn’t know the relevant industry situation, let alone the standard rules that manhole covers should abide by under the urban construction standard system.

“This… brother, we are students of the School of Economics, and we don’t know much about manhole covers.” Lu Wenshan said a little embarrassedly.

Ma Long responded, “I saw an answer on the Internet before. The biggest advantage of the circular manhole cover is that the diameter of the circle is the same. When the manhole cover is opened or an accident occurs, the manhole cover will not fall into the sewer. .”

This answer does have a lot of upvotes on the internet, and it seems to be the same thing, as if it were the right answer.

But not!

Shen Shizhong frowned, “It shouldn’t be the answer. I have a little idea in my heart, but I can’t conclude it. Should it be related to efficiency?”

Lu Wenshan asked An Liang for advice, “Brother Liang, what do you think?”

“Before answering the question of why the manhole cover is round, let’s go back to President Qin’s speech at the welcome party. President Qin only spent 1 minute and 18 seconds. The first meaning is high efficiency. One point I already said at the orientation party.” An Liang reminded.

Could it be that “there are other meanings?” Lu Wenshan was surprised.

Shen Shizhong and Ma Long also looked surprised. Was the meaning that originally seemed very profound to them actually the first meaning?

“Of course there are other meanings!” An Liang responded.

“Why does President Qin pursue an efficient welcome speech?” An Liang asked.

The three of Lu Wenshan showed contemplative expressions.

“Because we are Tianfu School of Economics, we are an economics school. In the economic field, high efficiency is a key factor, so President Qin chose a high-efficiency speech based on the premise that we are an economics school. This kind of Different choices made in different environments and in different situations are the deeper meanings. An Liang revealed the answer.

Lu Wenshan suddenly realized that he even guessed that An Liang’s welcome speech was a reference to Qin Daorong, “So Brother Liang’s welcome speech imitated President Qin?

“It means that.” An Liang didn’t deny it.

Shen Shizhong also responded clearly, “If we now go back to the question of why the manhole cover is round, we have to take different considerations according to different circumstances and situations, right?

“Yes.” An Liang nodded, “The answer that Brother Champion just said is just a situation in one of these circumstances.

“If we think deeply, are manhole covers really round?” An Liang asked rhetorically.

Lu Wenshan responded negatively, “It doesn’t seem to be.

“No!” Malone also responded.

Shen Shizhong explained more specifically, “In our school, many manhole covers are square.”

“So back to the original question, why is the manhole cover round, this question itself is a partial generalization, there are very big mistakes, and the answer is not comprehensive anyway. An Liang explained.

“The shape of the manhole cover actually depends on the shape of the well, which is the most intuitive answer.” An Liang responded.

“If the well is round, then the manhole cover is round, because in most cases, it fits perfectly. You can’t use 600 square covers for round wells, and round covers for square wells?” An Liang joked.

Although a square well can also be forced to use a circular well cover, the circular well cover must be made larger in order to cover the square well, but it will cause waste and is not in line with the laws of the market economy.

“Then why is it round?” Lu Wenshan asked the bottom line.

“Yes, I also know how to ask further questions to find the root cause.” An Liang praised first.

Lu Wenshan responded awkwardly, “Brother Liang, I’m really curious, I don’t mean yin and yang. 99

“..” An Liang was speechless, does this Onmyoji think why are all Yin and Yang strange?

Is An Liang really complimenting Lu Wenshan?

We have “learned mathematics. When the perimeter is the same, the circular area is the largest. One of the reasons for choosing circular wells is that the internal space is larger, which is more convenient for later maintenance.” An Liang said analytically.

“Then outside the second cafeteria, the manhole cover on the walkway is square, what is the reason?” Lu Wenshan asked again,