Modern mathematics is a powerful tool to model any number of real-world situations, whether they be natural—the motion of celestial bodies, for example, or the physical and chemical properties of a material—or man-made: for example, the stock market or the voting preferences of an electorate.¹ In principle, mathematical models can be used to study even extremely complicated systems with many interacting components. However, in practice, only simple systems (ones that involve only two or three interacting agents) can be solved precisely. For instance, the mathematical derivation of the spectral lines of hydrogen, with its single electron orbiting the

EP - 46 PB - Princeton University Press PY - 2014 SN - 9780691160412 SP - 32 T1 - From Complexity, Universality T2 - The Best Writing on Mathematics 2013 UR - http://www.jstor.org/stable/j.ctt4cgb74.7 Y2 - 2020/09/23/ ER -