Correcting Samuelson: The Non-Problem of Investment

Robert Samuelson cites an I.M.F. report this morning to tell us that the problem with the recovery is the lack of investment. Following the I.M.F. he attributes this to a lack of demand. However he disagrees with the I.M.F. that a dose of stimulus could increase investment by increasing demand, since he claims short-term stimulus won't be sufficient to change firms investment plans, since they know the demand will go away.

Okay, let's check the story starting with the original claim on invest...