Why did John von Neumann study chemical engineering as well as mathematics?

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John von Neumann studied chemical engineering alongside mathematics as a compromise with his father, Miksa Neumann. After von Neumann completed his secondary schooling in 1921, his father discouraged him from pursuing a career solely in mathematics, fearing that the field would not provide sufficient financial stability.1

To balance his academic interests with his father's practical concerns, von Neumann simultaneously pursued both disciplines, eventually earning a degree in chemical engineering from the Swiss Federal Institute in ZĂŒrich in 1925 and a doctorate in mathematics from the University of Budapest in 1926.1