Capital yields tend to equal the real interest rate.
You're just introducing new terms.
Sorry, I should have make this clear from the beginning. Do you agree with the sentence?
Anyway, I'm glad you admit deflation can be a problem at least in this case.
However, it still could be that there are other factors that would prevent this situation from occurring.
Sure, you could say that such a deflation would only appear after a boom caused by printing or fractional reserve.
But there was economic cycles with gold too.
Here we reach a point of major disagreement because of our different theories on interest.
According to the free-money theory of interest, the real interest rate being over zero in perfect competition is a proof that all demands aren't being satisfied and that some resources are being under-used.
Clearly this is wrong. The reason why it's wrong is that it's not really money that is being consumed, rather it's the scarce resources you buy with it. The decrease of the interest rate does not create new resources, it just creates a disequillibrium. With a lower interest rate than the market rate, you do not only allow new projects to be invested into, because this needs to be offset by other projects not being able to be constructed, while tricking people into thinking it can. This often only becomes apparent after time has passed, and leads to boom&bust cycles.
If we have, let's say, 10 apples and two different cooks that bid for them. One is willing to accept a credit at 5%, and the other at 10%. Both of them would, say, bake apple pies. Allowing both cooks, instead of just one, to take the credit, does not allow them cumulatively to create more apple pies, it would just allow the less efficient cooks (lower productivity) to use resources that would otherwise be used by cooks with higher efficiency.
I don't propose to lower interests by printing. I advocate for a money with demurrage and market rates.
In this case, the borrowers also compete for the credit, but the lenders could accept rationally a zero interest rate.
My point is:
1) Within perfect competition, profits tend to be zero.
2) The profit generated by producing goods are capital yields. When more producing goods are created of the same type, their yield drops because they compete with each other.
3) Capital yields don't tend to zero under perfect competition, because they tend to the real interest rates, which are always (with money-capital) positive.
Therefore, capital-money prevents competition between real capitals. If there were produced as much real capitals of a certain type as demanded, their yields would be zero.
He offers an interesting definition of interest I never heard before and I thought I could drop it in here.
He defines "interest" as the ratio between the subjective value assigned to some good in the present to the subjective value assigned to the same good in the future.
You can see it the other way around. Interest determines the ratio between the subjective value assigned to all goods in the present to all goods in the future.
This is an argument Bernard Lietaer uses to prove that "money is not value neutral".
For example, you plant a tree today. In 10 years its market value is $100 and in 100 years $1000.
The discounted value from present (how much do you need today to have $100 in ten years or $1000 in 100 years) depends on the monetary system. From one of his presentations: