Except in this case the growth comes from building and selling real things.
Can you explain how economic growth is like a Ponzi scheme. Lets take an example, lower income people being able to afford buying computers and use them, so computer sales go up. How is that a Ponzi?
The finite supply of resources on earth.
How do you prove they are finite?
Were they finit 2000 years ago as well?
If there were an infinite amount of matter in a finite volume, we would be infinitely dense (well, some are anyway, but that's a different definition altogether), which would make Earth something that it is altogether not.
Are you infinitely dense? (I am not; I can't prove it, but I suspect you are less than infinitely dense.)
What matter density has to do with resources required for people?
Stop spreading this shitty nonsense about limited resources please.
Luckily wealth isn't just a function of resources extracted from the earth. People create wealth.