Professor: Welcome back to Operations Research class. Last week we discussed the mathematical fundamentals of optimization theory, and this week we will see how to apply it to practice. Suppose we have n machines and m employees working on k different products. We want to maximize total profit, and –

Student: I have a question. What if we want to keep other things into account, like work satisfaction among employees?

Professor: The formalism allows for that by changing the objective and constraints. Anyway, so we want to maximize profit and the first step is to [blah blah blah]