A new Xbox 360 built by Microsoft loads Gears of War at 1500rpm. The console locks up. The drive crashes and burns with with the disk trapped inside. Now, should they initiate a recall? Take the number of consoles in the field, A, multiply by the probable rate of failure, B, multiply by the average out-of-court settlement, C. A times B times C equals X. If X is less than the cost of a recall, they don't do one.