In order to get more accurate results, our search has the following Google-Type search functionality:
If you use '+' in front of a word, then that word will be present in the search results.
ex: Harry +Potter will return results with the word 'Potter'.
If you use '-' in front of a word, then that word will be absent in the search results.
ex: Harry -Potter will return results without the word 'Potter'.
If you use 'AND' between two words, then both of those words will be present in the search results.
ex: Harry AND Potter will return results with both 'Harry' and 'Potter'.
If you use 'OR' between two words, then bth of those words may or may not be present in the search results.
ex: Harry OR Potter will return results with just 'Harry', results with just 'Potter' and results with both 'Harry' and 'Potter'.
If you use 'NOT' before a word, then that word will be absent in the search results.
ex: Harry NOT Potter will return results without the word 'Potter'.
Placing '""' around words will perform a phrase search. The search results will contain those words in that order.
ex: "Harry Potter" will return any results with 'Harry Potter' in them, but not 'Potter Harry'.
Using '*' in a word will perform a wildcard search. The '*' signifies any number of characters. Searches can not start with a wildcard.
ex: Pot*er will return results with words starting with 'Pot' and ending in 'er'. In this case, 'Potter' will be a match.
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Will you be one of the few who can prove Alex wrong? 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?