Cull

The sparrow stared at the mound of not-silver. "So how do I not get caught?"

"You stop asking the question they want you to ask," Cull said. "They want you asking are these examples real? — and they usually are. The question that actually protects you is: what's the pile these came from, and what got left out? A handful can't tell you about a river. Only the whole pile can, or a fair scoop of it — one grabbed without peeking."

She had learned it the hard way, as a fledgling. An older bird had flashed her three shiny beetles — "the meadow's full of them!" — and she'd hunted all day and come home with almost none, sure she was simply bad at finding things. Her grandmother, an old magpie, had poured out a mix of stones, mostly dull. "You're not bad at finding," she'd said. "You were handed a culled sample and mistook it for the whole meadow. Three shiny out of a thousand dull isn't 'full of them.' Someone reached in and kept only the ones that fit." She'd nudged the pile. "The commonest trick in the world isn't lying about the examples. It's hiding the denominator — the number they came out of. A number on top means nothing without the number underneath."

Cull carried that word — denominator — like a lockpick ever after. A grey afternoon, a worn-out crow slumped onto her stool. He'd spent a whole argument firing striking cases at a classmate and gotten nowhere. "I had so many examples," he said. "Real ones. Why didn't it land?" Cull laid two cards down. "How many did you look at before you chose the ones you brought?" The crow blinked. "The ones that fit, I suppose." "Then you culled your own evidence and never noticed," she said, not unkindly. "You went looking for cases that agreed with you and stopped when you found them. That's the same trick, aimed at yourself. It even has a name — you go hunting only for what confirms you, and the meadow of everything else stays invisible."

The crow sat with that. "So a pile of true examples can still be a lie."

"A pile of true examples chosen to persuade is exactly how the most convincing lies get built," Cull said. "Nobody has to invent a thing. They just show the silver and pocket the grey." She fanned her cards. "So when someone proves a point with a string of vivid cases, you don't call them a liar. You ask, gently: is this all of them, or the ones that fit? How many are you not showing me? Ask for the pile. Ask for the fair scoop. Watch the certainty come down to its real height."