Why It Works
An outrageous feature induces cognitive dissonance. That's fancy language for saying that an outrageous feature makes customers uncomfortable. So, they work (mentally) to get rid of the discomfort. The most common ways to deal with the discomfort are rejecting the feature outright, pretending that the feature was never really discussed, or transforming the "outrageous" feature into something that isn't so outrageous. The magic happens during these transformationsthey are the things that can create breakthroughs in the product.
This game is useful if you need to build products that operate in various "extreme" environments, because you typically can't easily simulate or access the extreme environment. Examples of extreme environments include those that are physically demanding or dangerous or those where the risk of human, societal, or financial damage is high should a failure occur. In these situations, the Give Them a Hot Tub game enables you to safely explore potential solutions for extreme environments.
Time Frame of Action