Children are often taught to think that mistakes are bad. They get red lines in their books when they mess up. This is why they fear to put their hands up in class and struggle to take risks. But in an experiment where children were taught to think of weaknesses not as embarrassing, but as opportunities to learn, they became more inquisitive and resilient. They also performed better.
That is the power of the mindset that underpins marginal gains. It might just change the world.
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