If at first you don't succeed try, try again:
Megan's arguing style here is dangerously close to the circular logic of intelligent designers. Sorry Megan, I still enjoy listening to you. If you think that the approximation of the multiplier being close to 1 on round 1 (say 0.95) is wrong then what is a better estimate? To counter with "I don't know, economic models are imperfect" is a little lame. If you think health care is such a big counter example prove that examples like it are the dominant source of the spending and not examples like the excess supply of steamrollers or whatever.