You could point to government programs where the initial cost paid for itself many times over: the interstate highways system, the GI Bill, telecommunications and science grants, even renewable energy investments. How much of the US's technology industry owes its start to Department of Defense funding?
Also, ut's not clear what you mean by "the data works out". Deficit spending (or national debt hysteria) hardly began with the most recent financial crisis. Demographics are shifting as baby-boomers retire. The vast majority of countries that cut spending in the downturn have lost more in GDP than they gained in debt reduction.
Yet, your point of view still appears to drive policy in Europe and is a factor in US policy. Let the beatings continue until morale improves...
Also, ut's not clear what you mean by "the data works out". Deficit spending (or national debt hysteria) hardly began with the most recent financial crisis. Demographics are shifting as baby-boomers retire. The vast majority of countries that cut spending in the downturn have lost more in GDP than they gained in debt reduction.
Yet, your point of view still appears to drive policy in Europe and is a factor in US policy. Let the beatings continue until morale improves...