Changing the key system is a technique I teach to help people develop new ideas when their thinking has become stuck. It’s one of my techniques for ‘turning the Kalideascope’. In other words, it’s a way to find new creative connections between all the inputs we have gathered.
What is the key system?
Design is creating something new. If it already exists, it isn’t design: it’s shopping (for more on this see my post on the Designer’s Paradox). I usually find that the overall shape of that new thing is defined by the answer to a few key questions.
For example, the overall shape of a city master plan might be defined by the answer to the question: how do we manage surface water. In a tall building, the key question is how do we manage lateral loads. For a song, it might be the rhyming structure or the chord progression.
In each of these situations, the key system, then, is the flood water system, the lateral stability system, the rhyming structure or the chord sequence.
The answer to these big questions has such a dominant effect on the solution space that, once they are set, the rest of the ideas develop within these parameters.
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