Keynes didn't believe that government stimulus would work if the money multiplier was less than 2. For example:
Under conditions such as the Great Depression, Keynes argued that this approach would be relatively ineffective compared to fiscal policy. But, during more "normal" times, monetary expansion can stimulate the economy. -- Wikipedia. During our own Great Recession, the multiplier has been below 1.0! And still declining....
“Keynes didn’t believe that government stimulus would work if the money multiplier was less than 2.”
The multiplier is always negative. When the government spends, the private sector and the economy contracts. Keynes was wrong.