As Long as You Don’t Lose Money, It’s a Success

Dad excitedly grabbed me around the waist and gave me an airplane ride.

As the ceiling swayed back and forth before my eyes—whoosh—moving rapidly this way and that, adrenaline surged, and helpless giggles spilled out.

Vroom-vroom-vroom-.

“Kyaaaah-!”

A little while later, Dad set me down and said excitedly,

“A-yeon, a 53 percent prediction accuracy is seriously amazing.”

“…Really? Like, super amazing?”

“Yep.”

Dad sat back down and explained.

“I told you last time, right? Even quant firms can’t break 55 percent, no matter how well they build their models. That’s how difficult the market is.”...