Explanation: The image is an edited meme based on a famous tweet that originally referenced a buisness class. “Sometimes on campus you accidentally walk by a Business class and the professor is writing like "profit = revenue - costs" on the board and everyone is taking notes like its actual school” The original tweet mocks Business majors by pointing out how trivial their coursework seems. Writing "profit = revenue - costs" is self-evident common sense that doesn't require higher education, making it funny that students take detailed notes on something so basic The math statement shown in the tweet is part of the Peano Axioms, which form the axiomatic foundation for the natural numbers (the counting numbers 0,1,2,3,…) in mathematical logic and set theory. It reads: “Zero is an element of the natural numbers. If x is a natural number, then the successor of x is also a natural number“ Together, these statements formally define how the natural numbers are built from scratch: 1) Start with a baseline element: 0 2) Apply the successor rule repeatedly: Since 0 is a natural number, its successor S(0) (which we call 1) must also be a natural number. Then S(1) (which is 2) is a natural number, and so on to infinity. Follow for more!! @ScholaMex #scholadaily #math #physics #engineering #philosophy