“They’re brothers,” said Zach, and you had to admire him, if only for his persistence. But it didn’t matter, because in an interview a lie can almost be as good as the truth. That’s because all good lies contain as much truth as the liar thinks they can get away with. This truth accumulates, and because it’s easier to remember the truth than something you’ve made up, it remains consistent where the lies do not. All you have to do is keep asking variations on the same questions, until you can sort one from the other. That’s why helping the police with their inquiries can take you all day — if you’re lucky.
Ben Aaronovitch (b. 1964) British author
Whispers Under Ground (2012)
