Engineering

Engineers use their knowledge of science, mathematics, and appropriate experience to find suitable solutions to a problem. Engineering is considered a branch of applied mathematics and science. Creating an appropriate mathematical model of a problem allows them to analyze it (sometimes definitively), and to test potential solutions.

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- Engineering licensure in the United States remains largely optional for the vast majority of practicing engineers not directly working on projects deemed to implicate "public health and safety" (this typically covers civil engineers and government contractors). This is known as the "industry exemption." And even for such public-safety projects, it is often sufficient for only the supervising engineer to have a license.