Quote from Ricter:
You have to factor in the economic multiplier effect as well, roughly 10 times, iirc.
The time to efficacy issue is a political problem, not an economic one. The Australian government eliminated the middlemen and essentially just gave their stimulus money to their citizenry, who of course spent it immediately. And they were first out of the hole too.
Stimulus spending will of course stimulate spending (except for the case where recipients save or hoard it, which was done here to some extent, sadly), that's cause and effect. I know anecdotally from my own business that it is working, and from what I'm reading it is also working for other economies.
Is it a tactic that should be used, eg. borrowing from our future labor, that's the real question imho.