[pauldw]

An easy way to play around with parametric or specification based custom manufacturing is by making custom food (like sandwiches) for people, but only accept orders in a standard computer readable format.

Interesting questions are raised. Is there a limit to topping counts? Is there an implied order to toppings? If toppings have a cost, do you calculate that as the supplier or leave that to the consumer? How do you make sure an order is vegetarian? What do you do if you can't fulfill an order due to topping shortage?

Also, if it's that kind of party, people will start making their own food order generators, raising another set of interesting questions.