Speaking of the question of what 1+1 equals.
Many people, when thinking of 2, might also have another term pop into their minds:
Goldbach Conjecture.
In many people's perception, 1+1=2 and the Goldbach Conjecture are one and the same.
But in reality...
This saying is also a very widespread misunderstanding.
1+1=2 is a theorem, the Goldbach Conjecture was not proposed to prove that 1+1 equals the number 2.
The true meaning of the Goldbach Conjecture is:
Any even number greater than 2 (represented by 2) can be expressed as the sum of two prime numbers (represented by 1).
For example, 12 = 7 + 5.
At that time, it was said that Chen Jingrun proved 1+2, meaning he proved that a sufficiently large even number can be expressed as the sum of two prime numbers.
Or as a prime number (represented by 1) plus the product of two primes (represented by 2).
For example, 100 = 23 + 7x11.
Xu Yun knew a friend in math from a past life who complained about this matter to him more than once.
