You need to consider the times you don't eat your leftovers and the times you ate your leftovers because they were there and still ate the other meals you would

You need to consider the times you don't eat your leftovers and the times you ate your leftovers because they were there and still ate the other meals you would have without having the pizza In business, inventory is expensive, especially if you end up throwing it away. http://mobile.businessweek.com/articles/2013-07-31/american-automobile-glut-unsold-cars-are-piling-up http://mobile.businessweek.com/articles/2013-07-31/american-... 3.27 million unsold cars sitting on the tarmac. That's two weeks total US car sales, and 10 of the top selling 20 are Japanese marques http://online.wsj.com/mdc/public/page/2_3022-autosales.html http://online.wsj.com/mdc/public/page/2_3022-autosales.html Producing more than twice what you sell makes no sense unless your metric is cost of production per car rather than sales per car produced