So if I am on a deserted island and I demand a burger, it will magically appear?
If you are on a deserted island and you demand a burger it would mean you are delirious.
But if there are others on your island, and if one of them has a cow, and another can bake a bun, provided you can pay enough for a burger to justify killing the cow, and presuming those others are interested in having some of your money, rest assured your demand would be met.
But without your demand, which includes your ability to pay, there would be no movement.
And those who think demanding something will make what they demand in our current economy are equally delerious. The cow and the baker on the island have skills and resources called capital. Assuming they are not doing something else, that capital is free to be used to make what people demand. If there is no demand for something, then it shouldn't be made. That is not to say there will not be demand for it in the future, in which case it may be wise to invest money to create something.
As you showed, without capital goods demand for consumer goods cannot be met. In a recession, capital is being reallocated. Stimulating demand in certain areas will only lead to misallocations that will fall apart later (housing).
You may also rest assured that if there were sufficient demand (which includes ability to pay) for flying cars they would be available.
As it is a fellow in Norway or Sweden (I saw it on Discovery Channel) has built a sleek little car with folding wings and tail and a propeller that does take off and fly. How much are you willing to pay him for it?
With more capital, such inventions would be cheaper, thus able to be demanded.
The point that escapes your attention is demand for the materials needed to produce burgers.
Not at all. Of course demand is important. But demand will never create consumer goods if capital goods needed to make them are nonexistent. Even when criticizing my island example, you had to insert the capital goods of cow, buns, and the skills to make buns and burgers. Had those capital goods not existed, the consumer good of burger would not exist either. Demand helps to
direct production using the given capital . Demand does not
create capital.
Back to the island. You have the cow. You have a man who knows how to kill/milk a cow. You have a baker who has the supplies to make buns and the ability to make them. With these resources, 10 burgers can be made, or 50 glasses of milk can be poured, but not both. If people demand burgers, they will get burgers, if they demand milk, they will get milk. If they demand both, too bad. The capital structure of that economy simply will not support it.
FDR's New Deal proved your theory is wrong.
You mean the New Deal that prolonged the Great Depression for over a decade?
FDR imposed a progressive tax on the rich with a maximum rate of 91 percent!
And look how that turned out. The economy performed terribly because capital resources were scarce.
The resulting revenue became the capital with which he financed the CCC (Civilian Conservation Corps) and other federal make-work programs which provided useful employment for millions of Americans made destitute by the Great Depression. This had the effect of reviving the economy and giving rise to many thriving new industries needed to supply the demands of millions of newly employed workers.
Government revenue is not capital. When I am referring to capital, I am referring to goods and resources used in production, like factories, machines, tools, knowledge, etc. It is illogical to think that taking money out of the economy through taxation and then putting less of it back (you have to pay the bureaucrats) through government spending will grow the economy. And it didn't, which is why the Great Depression lasted so long. The Depression of 1921 lasted only 1 year because the government did nothing.
FDR's use of taxes as capital, priming the pump as it were, initiated the most prosperous and productive decades in our history, the late 40s to the early 80s, the era when the American Middle Class came into being.
You don't understand what capital is. And you are assuming idle resources need to be stimulated. You have to look at why idle resources are idle in the first place, and the reason they are idle is because they were misused as a result of prior government intervention. The economy's capital structure was thrown into an unsustainable condition during the boom years, and it takes time for the mess to be sorted out. When the government runs up a deficit to fund "stimulus" projects, all that really means is that it is forcing taxpayers to pay for projects that they wouldn't buy with their own money.
What has to happen is that workers and other resources that had been misallocated into housing construction and Wall Street investment banks, need to be moved into other sectors. This was and is a fantastically complex reshuffling, because even something as simple as producing a pencil requires the contributions of thousands of workers all over the world. The period of "idle unemployment" serves a real function in a market economy. People try to find jobs in new sectors where demand actually exists, and business owners try to find out what people really want and how to best invest their resources so they dont lose big again. Government intervention only prolongs, confuses, and prevents this process. It can even cause people to enter right back into the same industries they left (housing) thus setting them up for a collapse again in the future.
Then came Ronald Reagan and supply-side economics. And here we are.
Oh lord. Ronald Reagan and his predecessors ended up pursuing essentially Keynesian economic policy. Reagan increased spending, raised the debt, raised taxes, and increased government regulation. It is a complete myth that he was a champion of free markets. Nor am I advocating supply side economics. I advocate Austrian economics.