He held the marker out to Whitney. "Solve this. Right now. In front of everyone." The room went still. Thirty-four pairs of eyes locked onto the Black waitress in the stained apron standing in front of a whiteboard full of numbers that most people in that room couldn't read.
"And if you can't..." Harrington's voice dropped. "You walk out that door. No job. No reference. Nothing. You disappear, and we never have to look at you again." Whitney looked at the equation. She looked at the marker in his hand. She looked at the room, the phones, the cameras, the livestream light blinking red. Then she took the marker.
"Okay," she said. Harrington smiled. The kind of smile that assumes the ending before the story is told. He turned to his guests, hands spread wide as if to say, "Watch this." He had no idea what he'd just started.
Whitney uncapped the marker. The smell of dry erase ink filled her nose. Sharp, chemical, familiar in a way no one in that room would understand. She'd used markers like this a thousand times, standing in front of bathroom mirrors in public libraries, working through equations on paper towels taped to the glass. She looked at the equation Harrington had written.
It was layered. Nested integrals wrapped around conditional probability functions feeding into a Monte Carlo output matrix designed to intimidate, designed to make a person freeze. Whitney didn't freeze. She started at the top. Her handwriting was small, precise, nothing like the bold strokes Harrington had used.
She didn't explain what she was doing. She didn't narrate. She just wrote. The room watched. Harrington leaned against the edge of a table, arms crossed, the smirk still carved into his face.
He whispered to his CFO, loud enough for the front row to hear, "Five bucks says she doesn't make it past the second line." Whitney made it past the second line and the third and the fourth. She isolated the stochastic variable first, pulling it out of the nested integral and rewriting the boundary conditions. It was the kind of move that told you immediately whether someone understood the architecture of the problem or was just guessing. Whitney wasn't guessing. She saw the structure the way a mechanic an engine.
Not the noise, but the rhythm underneath. A young analyst at the second table leaned forward in his seat. He was watching Whitney's hand move across the board, and his mouth was slightly open. He recognized what she was doing. A dimensional reduction technique he'd only ever seen in graduate-level papers.
He turned to the woman next to him. "That's not standard," he whispered. "That's elegant." The woman shushed him. Then Whitney stopped.