By the type of engineering you're talking about (the kind that doesn't require professional certification), I'd say the equation is Engineering = f(Science) +

By the type of engineering you're talking about (the kind that doesn't require professional certification), I'd say the equation is Engineering = f(Science) + f(Experimentation) + f(Product Re-evaluation) + f(Specification) Another type is: Engineering = f(Science) + f(Laws) + f(Standards) + f(Inspections) + f(Accreditation) Yet another type is: Engineering = f(choo) + f(choo)