$100 of Government Spending Murphy’s Estimates DeLong’s Estimates
Keynes Effect $50 $150
Housework Effect -$25 -$30
Galbraith Effect -$25 $0
Feldstein Effect -$80 -$33
The Bottom Line -$80 $87

I explain here. [UPDATE: I made two errors in the initial numbers. I believe it is correct as of Jan. 27, 1:40 PM EST]