Sweden the land where many positive things have come from. Volvo, the ABBA, Vikings and Gustaf Erik Pasch, who invented the safety match – are just a few of them. Swedes never seize to bring us more positivity, so this time it’s the fun theory or “rolighets teorin” in Swedish.  Apparently fun is the easiest way to change people’s behaviour for the better. And here is how they do it, with a little help from VolksWagen:

The Piano Stairs

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