The second principle for a temporary demand-side fiscal program is to implement policies that have a large "bang for the buck." Even with agreement on these two principles, designing a temporary demand-stimulus package is a challenge. In general, temporary policies have effects that are more difficult to predict than those from permanent changes.
And temporary policy changes typically leave a hole on the other side and therefore create other problems down the road. Still, on balance, a package of well-crafted, temporary, quick-acting demand-side fiscal measures would, in my view, make a constructive contribution to supporting and strengthening the rebound expected next year.