Think Twice

I hope you get every puzzle in this book wrong. I’m being honest. The more you answer incorrectly, the more fun you will have . . . Guardian puzzle master Alex Bellos knows better than anyone that the puzzles we find irresistible are the ones that deceive us. Those that seem blindingly, obviously simple – and yet we can’t help but get wrong. These 70 confounding puzzles – which Alex has scoured from across psychology, mathematics, statistics, physics, geography, the science of perception and more – are guaranteed to catch you off guard. But why are you getting them wrong? And how can you get them right? In Think Twice , Alex delights in tripping us up and then returning us to our feet, explaining how these puzzles work, the biases holding us back – and how to train your brain to avoid being hoodwinked again. Think once and you will stumble. Think twice and you are in with a chance. Now that you’ve been warned, can you prove Alex wrong?