The Commute Equation
Dr. Yuki Sato’s morning routine was a mathematical nightmare.
“Instance 1 through 4, report to Mars Mining Consortium. Instance 5, remain on Earth for Kenji’s school play. Instances 6 through 11, asteroid belt survey. Original body...” She paused, calculating. “Split between Earth and Mars via quantum tunnel.”
Her husband appeared on the kitchen screen from Phobos Station. “The time dilation is getting worse. When you took the Mars job, we didn’t factor in the compound interest of relativistic aging.”
Yuki pulled up her commute calculations. The numbers were stark:
- Earth to Mars: 7 minutes via quantum tunnel (3.2 hours biological time)
- Mars to Asteroid Belt: 45 minutes via instance projection (2.7 days experiential time)
- Temporal desynchronization: 1.3% per transit
“At this rate,” she said, “I’ll be three years older than you by Christmas. Kenji will graduate before I’ve finished what feels like a work week.”
“The Transit Authority says they’re working on it.”
“The Transit Authority says a lot of things.” Yuki watched her reflection fragment in the tunnel preview. Each instance would experience the journey differently. Some would arrive exhausted. Others refreshed. One—usually Instance 8—would arrive before she left.
The doorbell rang. It was herself, Instance 8, looking haggard.
“Don’t take the 7:15 tunnel,” Instance 8 warned. “There’s a temporal traffic jam. You’ll be stuck in Tuesday for six hours.”
Original Yuki nodded, updating her equation. The math was simple: modern life was impossible. The solution was obvious: stop commuting across solar systems.
But the mortgage on their Mars habdome required her salary. And Earth schools were better for Kenji. And the asteroid belt was where the real research happened.
She kissed her husband’s image goodbye, knowing he’d experience it 4.7 minutes ago.