Setting up a new building is generally known to be very complicated. As a result, especially in case of the most demanding buildings there are a lot of people who are responsible for the planning of the whole process. For instance plenty work that has to be put into this process has to be divided in time and among different employees.

Plenty of buyers of any kind of goods, sometimes are puzzling, how many weeks one product spends on shelf before someone take it. With food it is not a subject, it has expiry date.