This is John Bachelor.

Conversation with my good colleague Simon Constable.

He's in the south of France.

It's been raining for weeks and the fields are at the edge of being flooded and the crop

damaged.

Hasn't happened yet. We're watching. Another crop we're watching is

copper. Copper long associated with growth, prosperity, worldwide infrastructure. My concern is that China is claiming its economy is turned around, claiming its

manufacturing is accelerated. That would show up in the price of gasoline, the demand, and the price of copper the demand.

But is Simon Constable to explain, not this time, not yet, John.

More of this later tonight.

In this case, not.

I think you have to look over a long period.

So when you've got speculators involved in a market that is very thin compared to blue chip stocks

or the very biggest US stocks where there's lots of traders.

When you go into the commodities market, when you leave the oil part of that and you go into

metals or anything else, you're talking about a lot less liquidity in that market.

So getting in and getting out of a position

does impact the market on a short-term basis.