I couldn’t help but laugh at this post on a liberal blog by someone, I guess, trying to show how smart they were by arguing why supply-side economics is so great:
If you know economics, you know demand driven growth is short-lived and it is inflationary. Only supply driven growth, which lowers price and provide jobs, is long-term sustainable. With no capital investment, no long term growth. Who invest your money better? the government or the private sector? Government spends; private sector invests
Where do I start? I’m not even an economist, and I think I can take this apart pretty good:
- It’s called supply and demand for a reason
- How do you “drive growth” on the supply side? “If you build it, they will come” is a bunk theory. Creating a supply of something does not guarantee demand for that item. If I suddenly started producing blue bananas which taste like sewage, I doubt I’ll be able to sell very many, no matter how much supply I have of it. If you create an item which no on wants, it’s more like “If you build it, then you will go out of business.”
- On the other hand, having demand for an item should, in theory, create a supply for it since people can earn a profit of selling items for which there is a demand. If there is suddenly a demand for blue bananas which taste like sewage, then I have an incentive to create such a product to sell to people. (this assumes that the cost of creating such a product is low enough that people are willing to pay that price for it, of course). Of course, creating a large stockpile of said bananas doesn’t necessarily mean that more people will now be willing to buy them (going back to supply doesn’t influence demand).
- I guess the poster is thinkin that if we produce things that people aren’t buying, then we can give people jobs and pay them with the money people don’t pay us for the things they’re not buying, then those people can take the salries they’re not being paid from the money the company isn’t earning so they can go out and not buy the products of the company that people aren’t buying to begin with. OK yes, if you produce more of something, then the price will lower, making it so that you will sell more of that item. But if the demand was there to make such action more profitble, why wasn’t the company doing it to begin with?
- While long-term investment by companies is important, I’m doubting your salary is paid with the money that a company is investing somewhere. It comes from, you guessed it, people buying things (or if you work for the state, then from sales taxes from people buying things, or from income taxes on salries which are paid from the money of people buying things).
Now, I should note. In strict economic theory, “demand” is really the number of people willing to buy an item at it’s market price. If you’re not willing to buy a product at $X dollars, then you’re not counted as having that product in demand in the strictest sense.
Of course, in practice there are many things which I demand and which I would buy if I had the money for it, and this demand must exist (and be at a sufficient level to be profitable for the company) for the creation of any new supply to make sense. But as I said, just creating supply doesn’t mean that people will suddenly desire your product when they didn’t before.
This is the heart of the problem with supply-side economics. It assumes “if you build it, they will come” which isn’t true at all. Hell, the American automakers pumping out hordes of SUVs that no one is buying, no matter how much of a discount is on them, should be enough evidence of that.