Three is a number, right? So are pi, the square root of two or i. But mathematics is all about abstraction, so how do we abstract the concept of a number? How do we properly define numbers?
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Three is a number, right? So are pi, the square root of two or i. But mathematics is all about abstraction, so how do we abstract the concept of a number? How do we properly define numbers?
People often ask, “What is the single most important environmental/population problem facing the world today?” A flip answer would be, “The single most important problem is our misguided focus on identifying the single most important problem!”
Jared Diamond