global gold demand slumps , page-17

I suppose the point of investing in gold is that it can't be manipulated forever. If it were possible, the price would remain at $270 / oz where it was 7 years ago.

As to grain being a primary medium of exchange in global markets - it will never happen. We've been through this before. There is a reason coins have been made of silver and gold throughout history and in nearly all cultures. It's ideal as a medium of exchange. It's not my fault you don't want to accept this.

Fertiliser and grains may be great investments - better than precious metals even, but they aren't nor will they be universal currency.