The Rene Descartes Approach to Problem Solving

Can a car be allergic to ice cream?

Soon after buying a new Pontiac, a man made a complaint.  “Every time I buy vanilla ice cream, when I start back from the store my car won't start. If I get any other kind of ice cream, the car starts just fine”

Pontiac sent an engineer and to go with the man to the ice cream store. It was vanilla ice cream that night and, sure enough, after they came back to the car, it wouldn't start.  The engineer returned for three more nights. The first night, the man got chocolate, the car started. The second night, he got strawberry, the car started. The third night he ordered vanilla, the car failed to start.

Every night the engineer took notes: he jotted down all sorts of data, time of day, type of gas used, time to drive back and forth, etc.  He soon found that the man took less time to buy vanilla than any other flavour. Why? 

As vanilla was the most popular flavour, it was kept at the front of the store for quick service. All the other flavours were kept in the back of the store at a different counter where it took longer.  Once time became the problem - not the vanilla ice cream, the engineer quickly came up with the answer: a vapour lock.  The extra time taken to get the other flavours allowed the engine to cool down sufficiently to start, but when the man got vanilla, the engine was still too hot for the vapour lock to dissipate.

Not all problems need a creative solution, or are particularly complex. For some problems you need to be meticulous.

As Rene Descartes put it, “Divide each problem into as many parts as is feasible and necessary to resolve it.”