A question made of cardboard

An original commentary about the purpose of an early design model.

The first cardboard model should be allowed to look temporary. When I see a carefully painted surface and miniature people standing beside it, I have to remind myself that confidence in presentation is different from confidence in the decision being tested.

An early model can ask a modest question. Can two objects sit beside each other without one blocking the other? What becomes difficult to reach? Moving a rough piece makes the relationship visible and gives a discussion something more definite than an attractive promise.

Too much finish can change that discussion. People may hesitate to suggest a large alteration because the work looks expensive to undo. They comment on the colour of a surface while the arrangement beneath it goes unquestioned. The model has begun protecting a decision which it was meant to help examine.

Roughness has dangers too. An unclear model may ask visitors to imagine so much that each supplies a different building. A missing doorway can be mistaken for a deliberate barrier, and an unfinished edge may distract from the issue under discussion. The maker needs to explain what is represented and what has been left undecided.

A model also has limits of scale and material. Cardboard can show a relationship without proving how a finished structure will behave. The test should be described clearly enough that a useful observation does not grow into a claim the model cannot support.

The best early model leaves a conversation with a sharper question or a justified next decision. It may be thrown away afterwards. That can be evidence that it has done its job, provided the learning survives somewhere more dependable than the memory of everyone admiring the miniature people.

Explain how the writer thinks an early design model should contribute to a decision.