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Fermi Problem

Category
Mathematics
Also Known As...
Back-of-the-Envelope CalculationBallparkGuesstimation
Related
Drake EquationFermi Paradox
Fermi Problem

Definition

A rough calculation to arrive at a reasonable estimate — unknowns and all — where the result could be considered logically approximate.

Origin

Named for physicist Enrico Fermi's ability to make good approximate calculations with little or no actual data.