I would also like some help with the authors logic - before i dismiss it.
lets say there are 100 pounds of widgets in the world with 10 being made and 10 breaking every month.
And those widgets can be traded.
If someone buys a contract and some one sells it - how does that cause the price to go up
Does more open interest really mean prices go up? Don't the traders have to reverse the trader at a later date?
Secondly how does the cost of that contract get incorporated into the price of the contract?