@dinofelis
So if I get you:
1) OP's scenario is not possible. This is just common sense. Simple arithmetic, you cannot give back the non-existent part (additional penny).
2) But, nevertheless, this game can go on in perpetuity and indeed never touch this non-possible case of paying back everything, if the following conditions are met:
- Continual creation of additional debt which itself is possible only if growth (demand for loans) is continual.
- Loans are made with different maturities
?
No, there is no need, for creation of additional debt or growth or whatever.
Is this so difficult to understand ?
What is needed for a finite money supply that is nevertheless lend out with interest, to be sustainable, is simply ONE SINGLE CONDITION:
that the lender (who is entitled to receiving the interest) SPENDS at least the amount of interest on goods and services.
That's all.
If I print 100 pennies, I lend them to you, and I ask 101 pennies back next year, that's obviously not going to work if you have to pay this back IN ONE SINGLE GO.
But if I print 100 pennies, I lend them to you, and I ask 50 pennies back in 6 months from now, and I ask 51 pennies back in one year (totalling 101 pennies back), then this is very well possible on ONE SINGLE CONDITION:
that between 6 months and 1 year from now, I BUY something from you worth (at least) 1 penny (the interest).
It goes like this:
a) I print 100 pennies, I have them now.
b) on the first of january, I give them to you. Now I have 0, and you have 100 pennies.
c) on the first of july, you give me 50 pennies. I now have 50 pennies, and you have 50 pennies.
d) on the 3rd october, I buy an apple from you, against a penny. I now have 49 pennies, and you have 51 pennies.
e) on december 31st, you give me 51 pennies to liquidate your loan. I now have 100 pennies again, and you have nothing.
f) if you want to, we can start over next year.
The important point in this game is that I GOT AN APPLE FOR NOTHING while we were shifting pennies.
This is why I'm in this game for a start: I want to get free apples. So I WILL spend some of the pennies you give back to me. Otherwise this doesn't serve me any purpose. If I print money, I want to enjoy goods and services for it. (I'm the state, right !....)
You see that at no point, I had to print an extra penny, we had to have growth or whatever. At no point, you had to subscribe to another loan. You only had to produce an apple, and give it to me for free (against a penny, which was the interest you had to pay me, which I got out of nothing because I printed the pennies for nothing).