We have "serious people" Bernake is the most serious of academic economists, of course he is running the country into the ground. The educated economists that caused the hyperinflation in Germany, Zimbabwe, Hungary, etc. were "serious people" often the best in their fields. What then do you propose? Keynesian economics have failed. The collapse of the European economy and the ongoing collapse of the American economy is proof of that.
Fiscal austerity in a liquidity trap is not Keynesian, so to claim it has failed is reading from a fraudulent playbook.
Let's try a serious stimulus (this time) to let states rehire teachers and police, extend the school day and resume civics, music, arts, theater, sports after-school programs, and get some national infrastructure projects going. Let the Fed finally fulfill their dual mandate to maximize employment by bumping inflation up to 4% to get big business spending instead of stuffing bonds into their mattresses. Let's see to it that no child in this country goes without healthcare or food. Let's make sure banks that are insured by our tax dollars aren't taking depositor money to Vegas.Hell, while we're at it and on Slashdot, let's nationalize the last fscking mile and create an even field for all comers as ISPs again, opening the doors of competition for a new generation of high-tech entrepreneurs.
Let's pay for it by borrowing at negative rates while we have them and getting serious about collecting taxes from corporations who sit on war chests and individuals who make enough in a day to pay my entire yearly budget three times over - but pay about half the tax rate I do. Let's make some common-sense efficiency changes to entitlement programs that will not curtail services but will reduce overhead and duplication of effort. LET'S ELIMINATE THE DHS IN ITS ENTIRETY. Let's stop feeding the new Jim Crow incarceration industry with our money by criminalizing things like pot and bullying, and instead address the underlying societal factors that drive people to destructive behavior, saving money and creating futures (with better paying jobs, and thus a stronger tax base) for 10% of the population where before they had none.
This isn't an exhaustive list, and most of these aren't my ideas, but they ARE my idea of a good goddamn start.