"If you're a farmer worried about the value of next summer's wheat crop, you can sell it ahead of time for a fixed price. So now you have a contract to deliver X amount of wheat by a specific date - and that contract can now be bought and sold. The contract, which derives its value from the underlying goods, is known as a derivative - and that contract can be bought and sold many times, whereas the wheat will only be delivered once; people betting on the value of next year's wheat crop may turn that derivative over on a daily basis between now and next summer. That's why the market in derivatives can be many times bigger than the value of underlying assets. Chicago and London are the world's biggest derivative markets; in London more than a trillion dollars of the things are traded every day. That's about half the whole size of the British economy, traded daily."~ How to Speak Money by John Lanchester, a fun new book I got for ChristmasI read this, and I have to think: why don't we make a derivatives exchange on EMC? It'd work like this.Someone would set up an exchange, and approach bulk buyers looking to make some money in advance. Bulk buyers would offer a set quantity of materials (probably in DCs) at any time following a specific time and date.The exchange owner would write a minimalistic contract as a Written Book, detailing the username (or usernames, if the supplier uses alts) of the supplier, the quantity and type of good offered, and the date from when the contract would be eligible to be redeemed. The Book would be put in a shop chest on the exchange's residence, and an advertisement put up on the forums.Someone would buy the contract from the exchange, and the exchange owner would pass on the bulk of the money, taking a small fee for their services. The contract would then be free for the buyer, or any future owner, to sell or buy.Once the redemption date has arrived, the bulk supplier delivers the goods to the exchange's storage area. The exchange owner collects the book, checks if it is counterfeited (i.e. not written by the owner or an alt of the owner) and if it is valid, the owner leads the redeemer to the storage area, where they could collect the goods.What opportunities would this create?If you're a supplier, the price of a good could go down due to an update making it more abundant, you could secure a good price in advance.If you're a supplier, you get your money in advance.If you're a trader, you could make a quick profit if you know your stuff; buy low, and sell high.If you enjoy making rupees through tedium and attention-to-detail, you could run an exchange.If you're a buyer, you could possibly get a cheaper deal by paying in advance.Thoughts?