This is a neat idea for behavior modification. They transform this subway stairwell into a piano as a means of entertainment.
They saw a 66% increase in the number of people taking the stairs over the escalator. The question I have is if those numbers would stay up. Would the novelty wear off, or would people continue to choose the piano?
What if every stairwell in the subway was transformed... Too annoying?
Really really annoying.
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