You can buy a small fraction of a chicken farm, so that when chicken prices go up, so does the value of the chicken farm. Then you simply sell a tiny fraction

You can buy a small fraction of a chicken farm, so that when chicken prices go up, so does the value of the chicken farm. Then you simply sell a tiny fraction of your chicken farm, and use that money to buy a chicken. That way you can preserve your chicken buying power through the years, rather than having a guaranteed -2% return on your money.