Unnamed Photo Cerdit: Flags In the swimming competition, the top 50% swimmers swim significantly faster in the first 500 meters than the bottom 50%, and there is no difference in swimming speed in the last 1000 meters. During the bicycle race, the bottom 50% of the competitors speed up their bicycles in the first 20 kilometers (the second lap speed is significantly faster than the top 50% of the competitors), to shorten the distance with the top 50% of the competitors, all the competitors have 20 kilometers behind the bicycle race Tendency to reduce speed. "What is X? Can I eat it?" is a popular phrase in my generation, used about ten years ago to show youth. This phrase is generally used to indicate that something is outside the audience's knowledge, or to introduce oneself to something to discuss next.

There are levels of ignorance, which can be seen in how you ask questions. "Is square root 2 an irrational number?" It shows that your understanding of square root two is not as good as that of an ideal high school student (even if it is better than me), but you know that square two is a number, so there is a so-called rational number or irrational number difference. But "Can root number two be eaten?" shows that you are ignorant of root whatsapp list number two than I am, and ignorant to the extent that you may confuse root number two with coriander. "What is X? Is it edible?" is interesting because it implies that the speaker not only does not know what X is, but even what kind of thing X is. The square root of two is a number, and the number is an abstract thing.

It is physically impossible to eat it. "Can the square root of two be eaten?" It shows that a person does not even know this. In philosophical terms, if you are ignorant enough to doubt that irrational numbers can be eaten, we can say that you have committed a "category error." At present, there is no consensus among philosophers on the criterion of category error, and there are different analyses competing with each other .