Should governments increase spending to boost the economy?

Yes, because an increase in government spending can always increase aggregate demand and the GDP.

No, because it will simply reduce private consumption, as families will start to save more to be able to afford future taxes.

No, because it will simply increase interest rates and reduce private investment.

Yes, but only in the case of an an economic depression.

Yes, but only when the economy is under its full potential.

No, because it is difficult for governments to know when the economy is under its full potential.

No, because government leaders may have an incentive to abuse government spending for electoral reasons.