The loft in my house is heavily insulated with a yellow material made of glass fibre. Every time I open the hatch to retrieve a suitcase or box of toys, I’m showered with thick strands of the stuff. Not only do I look ridiculous in a frizzy yellow wig, but – because glass fibre is an irritant – I also itch for hours afterwards. You’d assume, therefore, that I disliked insulation. But you’d be wrong...
You see, insulation holds the key to developing and perfecting skills.
Our brains are like the back of an electrician’s van: a tangle of coloured wires – about 100 billion to be imprecise. These wires are called neurones and they are connected to each other by synapses. Whenever we do something – think, move, read this article – our brain sends a signal down these neurones to our muscles.
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