On the other hand, if math is invented, then why can't a mathematician legitimately invent that 2 + 2 = 5?

从另一方面说，如果数学是被发明的，为什么2+2不等于5呢？

youdao

On the other hand, if math is invented, then why can't a mathematician legitimately invent that 2 + 2 = 5?

从另一方面说，如果数学是被发明的，为什么2+2不等于5呢？

youdao