对凯恩斯来说，答案是明确的，这个答案与萨默斯和克鲁格曼的观点比较接近；事实上，正是这一结论让凯恩斯从货币主义者变成了凯恩斯主义者。
For Keynes, the answer was clear, and it was something close to what is being argued by Summers and Krugman; indeed, his conclusions are what transformed him from a monetarist into a Keynesian.