Why do we assume that the supply doesn't change, especially considering that growth is constrained by demand right now?
I don't think you understood what I said.
The only time changing the supply changes demand, is during the change in money supply. Once the money supply is stable, the long run demand will be the same. If the money supply increased that would cause inflation as the relative value of goods/services the money represents would be the same but the supply of bills would increase. Money is the value per nominal value, so its really just a simple fraction. Increase the value of the denominator relative to the numerator and you get less value per dollar.
Firms and individuals would hold off on spending while deflation was happening in some situations because the value of the money may go up enough to make up for the lost utility of forgone goods.
Firms and individuals would spend money while inflation is happening in some situations because the value of the money may go down and thus investing in utility may give less of a loss then holding onto the money.
The assumption in all the aforementioned is the real money supply and its velocity.
I could see the argument if we were seeing 3% inflation, but we're not. Inflation is near 0%. In that situation, increasing the money supply absolutely increases demand and by extension economic growth.
It does not increase demand in the way you think it does. There might be a small boost in people spending money because the value of said money is going down, but it wont be long term. Investing now means you can't buy later. You may end up getting people to invest in things that are not as productive as they could have been had you not fucked around with the market.
What you are advocating is to use inflation to make the value of their money less so they will be less likely to hold onto it. Thats pretty shitty to me.
Really? Then why didn't everything inflate when the Fed was pumping $85 billion a month into the economy a year ago?
If we were supply constrained, you'd be mostly right. More money in the economy would simply push prices up. Now the effect would be far more muted since there's a lot of slack capacity.
You seem to be stuck on supply in terms of push pull inflation I think. Read up on some economics and you will learn some shit.
The reason inflation is not rocketing up is because of a neat trick that the FED cooked up. See, there is the money supply and the real money supply. The FED has increased the money supply, but not the real money supply. This has made the velocity of money not increase and thus inflation has not increased.
The FED gave a shit tone of money to the banks, but effectively made the money given unusable. What the FED did was to pay interest on excess reserves. The FED raised the minimum amount a bank must hold. That money cannot be used and thus does not really factor into velocity. Then, the FED pays the banks interest on the Reserves banks hold.
The FED gave the banks money, then paid the banks for holding that money. This allows the banks to balance their books while giving them a small revenue stream.
Like I said, a neat trick.
What you don't understand is that it matters which part of the business cycle we are in. If you doubled the checking account of every American tomorrow, you'd certainly see some inflation, but probably far less that what you imagine. A lot of people would simply use the extra money to pay off some of their student loans, or car loans, or mortgages, which would have very little impact in demand.
High debt levels are one of the factors depressing American demand right now.
Look at what you said like this.
There is a family who is poor who is deciding on a tank of gas or dinner for the night. Say you give that family $50. Did you pay for the dinner, the gas, or both?
If you gave students money, are you paying off their debt, their dinner or both. Are you giving the banks your money, the restaurant, or both?