Wendel, Elvi, Fiva and Dashel

Behind the curtain they walked through the act one final time, exactly the way they had rehearsed it all week — four routines braided together into a single show, each of them carrying one strand.

Wendel took the lead, because Wendel had never met a date he didn't love. "Somebody in the crowd shouts a birthday," he said, "and I tell them the day of the week it landed on. But I don't sit around memorizing a calendar." He shook his head at the very idea. "I anchor the year's doomsday — the weekday I already know for that year — and then I step. By sevens. I keep sliding by seven days at a time until I reach the date they gave me, because the weekdays run around a loop of exactly seven, over and over, so counting in sevens never knocks me off the track." He had walked that idea so many times it had worn a groove in him; naming a weekday now felt like following a familiar path in the dark, foot finding stone without looking.

Elvi's routine was the times-eleven flash, and she loved how fast it looked. "Give me any two-digit number and I'll multiply it by eleven before you've finished asking. Twenty-three?" She mimed taking hold of the two digits and prying them gently apart. "I open a little gap right between them, add the two digits together — two and three make five — and drop that five straight into the gap I made. Two, five, three. Two hundred fifty-three." She grinned, quick and sharp. "It isn't fast fingers and it isn't showing off. It's that multiplying by eleven copies a number onto itself, shifted over by one place — so the digit that lands in the middle is simply the sum of the two neighbors on either side."

Fiva squared numbers that ended in five, and she made it sound almost lazy. "Someone asks me thirty-five times thirty-five? I take the tens digit — the three — and round it up to shake hands with its next-door partner, the four. Three times four is twelve. And every single one of these squares ends in the exact same two digits: twenty-five. So I just set the twelve down and hang the twenty-five off the end. Twelve twenty-five. It's always twenty-five on the tail, never anything else, because a number ending in five is sitting precisely halfway between two easy, friendly neighbors, and that pair of neighbors quietly does all the heavy lifting for me."

Dashel went last, the way he liked to, and Dashel raced the calculator. "Toss me two big numbers to add," he said, "and I'll answer from the big end first — hundreds before tens, tens before ones — saying it out loud as I go, so the answer is already mostly true and standing up on its own before the machine has even finished carrying its first little digit."

Then the curtain went up, and the light poured over them, and the room became a wall of faces.

For one held breath the brightness was blinding, and every one of them felt the freeze coming on — that blank, white, what-was-my-very-first-line dread that reaches up from the stomach and closes the throat.

And then Wendel heard it: a voice from somewhere in the dark called out a date, the way audiences always do, half-daring, half-hoping. His feet found the path before his fear could finish its sentence. Anchor the doomsday. Step by sevens. He landed square on the weekday and said it out loud before he had entirely decided to, and the whole room drew a gasp — and just like that the freeze cracked and melted into something warm and enormous and loud.

After that they were simply doing the thing they knew how to do. Elvi plucked a number out of the air and split it open at the seam. Fiva caught a number ending in five and folded it into its friendly pair without breaking stride. The methods held all four of them up the way a floor holds you up — a floor they had built themselves, plank by plank, and then half forgotten was even under their feet.

Near the end of the act, a small voice piped up from the front row — a kid, both hands gripping the edge of the seat, leaning so far forward they were nearly out of it.

"But what happens," the kid asked, "if you get one wrong?"

The four of them glanced at each other. It was the question that had been sitting underneath every last nerve.

Dashel crouched down at the very lip of the stage, close, and when he spoke he wasn't performing anymore — he was just talking, one person to another. "Here's the real secret," he said. "None of us out here is guessing. Wendel isn't hoping the weekday comes out right — the sevens make it right, every time, whether he's nervous or not. Elvi isn't getting lucky — eleven always copies the number in exactly that way. Fiva's fives always, always land on twenty-five. And I'm not actually fast — I just start where the answer is biggest, so it grows toward the truth from the beginning." He tapped the boards beneath him. "The tricks work all by themselves. Our only job up here is to trust the method enough to say it out loud."

The kid sat with that for a moment, turning it over. "So the nervous part," they said slowly, "isn't really about being right."

"The nervous part is just the lights and all the faces," Fiva said, gently. "The right part got decided a long time ago — back when we each figured out why our own trick can't fail."