"Archimedes Plutonium" wrote in message
...
Now I suspect that in the future when agriculture does not use one drop of
petroleum on farming and where about 50% of Earth's population is working
to produce food and where Earth has a controlled total population of about
2 billion people and no more.

So these block not only become the ideal method of gardening but in the
distant future become the ideal method of Farming.

wonder if he has ever stopped to think what the oil cost of concrete blocks
is

Jim Webster