Formal Problem Modeling
Formal problem modeling means translating a real-world problem into a precise, mathematical description, defining exactly what counts as a valid input and what counts as a valid solution, and, for a problem that asks for the best solution rather than just any valid one, what makes one solution better than another. A precise model makes it possible to reason rigorously about a solution's correctness and efficiency, and to recognize when two problems that look different on the surface are actually the same underlying problem in disguise.
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