All projects (or businesses go through three stages acquisition, operating, and disposition. Using Chipotle Mexican Grill as an example (tickler symbol CMG) please indicate what you believe to be the most important estimate, number or variable in estimating the cash flows of each stage of the opening, operating and disposition of a new restaurant. Put another way - what do you believe is the most important estimate for Chipotle before opening the store, while operating the store, and in disposition of a store?