Another classic example is: you're a boss and have 3 decisions to make, a or b, c or d, and e or f. Now if you look at them independently you may end up choosing a, c, and e. However, if you look at them all with respect to "Amount of free cash flow next year" you may find out that whilst individually they're not a good choice, together, b, d, and f are the best combination of choices to make.