You are conflating overall supply and demand with the supply and demand for a particular good or service, as I keep trying to say. The argument has never been that in order for the demand for haircuts to increase, the supply of haircuts must first increase, yet you keep directing posts at that argument.
You keep claiming that the haircuts must already exist before they are sold, then you claim that they don't have to exist first. make up your mind.
You are absolutely right--that is how individual businesses tend to operate. But I am not talking about individual businesses. I am talking about the economy as a whole.
The economy as a whole is based upon adding up all the behavior of all of the individuals.
If people are increasing their demand for haircuts, an increase in overall real demand can only be possible if there was an increase in production somewhere else first. I think the error in reasoning lies in thinking that an increase in the total money supply is equivalent to an increase in demand. It is not. It merely reduces how much a given dollar can demand, and in real terms demand has not increased, only shifted.
You keep saying that, and I keep explaining that there is more than one possibility here. Can you honestly deny that a tax cut on the worker/consumer class wouldn't boost demand, assuming that government spending doesn't decline as a result of that tax cut?
I think you missed the key sentence:
"A shift in taxation or wealth distribution or spending preferences will cause merely a corresponding shift in demand. Demand will be redirected, not created. Additional demand can only be created by additional production. An overall increase in production comes before any possible overall increase in real demand."
I haven't missed it yet. It's a gross oversimplification that doesn't necessarily hold true.
Economies grow when production (supply) increases, simple as that.
Absolutely, and demand is the factor that controls production. No one is going to produce more than they can sell.
Demand does not increase production, it merely directs it. Increased production allows people to demand more than before, not the other way around.
While increases in production do allow people to demand more than before, that's not the only factor that can increase demand, and the amount demanded is the factor that controls how much is produced. If you became King today, what would you do to incentivize companies to start producing more goods and services than they currently had demand for? Would you order the barber to cut imaginary hair? Would you tell the toaster oven company to start producing more toaster ovens than they can sell?
What increases production is not demand, but innovation. Entrepreneurs find more efficient means of producing things. They find ways to produce greater quantities at lower costs. And this applies not only to specific consumer goods industries, but capital goods industries at the very start of the structure of production. Oil producers, for example, find a way to extract more oil than ever before at a fraction of the cost. This allows them to sell oil at heavily reduced costs. Since oil in some form is vital for the production processes of nearly everything (transportation is involved in nearly every production process for example) that will allow multiple businesses to benefit.
You are describing an increase in productivity, not production. Increased productivity is certainly good, but it's a requirement of increased production. In my shop, I can increase production without even increasing productivity, it's just a matter of working longer, or having more employees - but I won't/can't do that, unless I have an increase in orders first.
You can give every single consumer $100,000 new dollars, but that will merely create more dollars, which are merely mediums of exchange for actual wealth. It would not allow the economy to produce any more value than before.
Exactly. That's why I never suggested doing that. Has anyone in this tread made such a suggestion?
I didn't miss anything. In that bolded sentence, you should reword that to say "Additional demand can only be realized by additional production" Note that I changed the world "created" to "realized". Additional production will only be created, due to demand increasing. If we buy/sell more goods and services, the production of those goods and services is pretty much automatic. How to create the demand is the issue, and that usually requires someone having a few extra bucks in their pocket, and there are more than the two ways that you keep pointing out for that money to get in their pockets.