At the same time the Constitution sets in stone the Stability Pact and risks preventing member States from implementing a policy of growth. So we are not able to do things at the European or the national level.
Trust your gut instinct over spreadsheets. There are too many variables in the real world that you simply can't put into a spreadsheet. Spreadsheets spit out results from your inexact assumptions and give you a false sense of security. In most cases, your heart and gut are still your best guide.
The moments we have behind us, you won't be able to see again. We're only responsible for what we live in right now.