Adding is favoured over subtracting in problem solving - Deepstash

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How would you solve this problem?

How would you solve this problem?

How would you change this structure so that you could put a masonry brick on top of it without crushing the figurine, bearing in mind that each block added costs 10 cents? If you are like most participants in a study reported 1 in Nature , you would add pillars to better support the roof. But a simpler (and cheaper) solution would be to remove the existing pillar, and let the roof simply rest on the base.

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The unrecognised value of subtraction

The unrecognised value of subtraction

It was demonstrated that the reason their participants offered so few subtractive solutions is not because they didn’t recognize the value of those solutions, but because they failed to consider them. Indeed, when instructions explicitly mentioned the possibility of subtractive solutions, or when participants had more opportunity to think or practise, the likelihood of offering subtractive solutions increased.

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5 more reasons why subtraction is overlooked

5 more reasons why subtraction is overlooked

  1. Subtractive solutions are also less likely to be appreciated.
  2. People might expect to receive less credit for subtractive solutions than for additive ones.
  3. To get rid of something might feel less creative than would coming up with something new to add.
  4. People assume that existing features are there for a reason, and so looking for additions would be more effective.
  5. Sunk-cost bias (a tendency to continue an endeavour once an investment in money, effort or time has been made).

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heisenberg

Digital marketing at dentsu. Invested in the symbiosis of marketing, psychology, and design. Photographer at heart.

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