Aardman Animations — the outfit behind decades of Wallace & Gromit and Chicken Run claymation features — has a clay supply problem. The only company that makes Lewis Newplast, the clay they’ve been using for years, has shut down. They bought all the remaining stock, but Aardman only has enough clay left for next year’s Wallace & Gromit film. Then what?

Aardman will find a new supplier, an acceptable substitute, or… well, something. It’s an outstanding example of how economics works.