When asked how this would work out in the long run, he famously answered, "In the long run, we're all dead."
Well, that gay old childless queen is dead, but we're here and alive, and we and our children will finally have to pay the price he didn't care to imagine.
"There is no means of avoiding the final collapse of a boom brought about by credit expansion. The alternative is only whether the crisis should come sooner as a result of a voluntary abandonment of further credit expansion, or later as a final and total catastrophe of the currency system involved."
-~~Ludwig Von Mises
Your ignorance of Keynes knows no bounds.