> provide numbers Even a spreadsheet with such numbers is primarily speculation and your upper management knows this (they make such things all the time). As s

> provide numbers Even a spreadsheet with such numbers is primarily speculation and your upper management knows this (they make such things all the time). As such, if they did not want to agree with you before this spreadsheet won't make a difference. If they want to agree but don't want to take the time to present exactly that spreadsheet to their compatriots, it is worth making it. If you don't work for a very large company (essentially a bureaucracy), this situation probably will not occur.