Later that night, he sent a Slack message to the team: “Found Gerald’s hidden Euclidean bug. Also, never trust a TODO comment from 2016.”

That was the bottleneck.

[INFO] RouteOptimizer: Using ModernRouteOptimizer [INFO] Delivery ETA: 6.2 hours (previous: 8.7 hours) Leo leaned back. The trial still had three days left, but he didn’t need them. He opened the company credit card form and typed: .NET Reflector Professional v11.1.0.2169 – 1 license – perpetual with one year maintenance.

Leo opened Visual Studio, then launched . The splash screen appeared—a familiar deep blue with the stylized magnifying glass over a C# bracket. "Loading assembly cache," it said. Then, "Ready."

Leo, a senior backend engineer at a midsized logistics firm, sighed. Three days. He’d been putting this off for weeks. His team maintained a monolithic Windows service that routed shipping data between a 2008-era SQL Server and a modern Azure Functions fleet. The original developer, a man named Gerald who had retired to a sailboat in the Bahamas, had left no documentation. And the source code repository? Corrupted during a botched migration to Git.

public List<DeliveryStop> OptimizeDeliverySequence(List<DeliveryStop> rawStops) { // TODO: Replace with actual A* implementation // Gerald's note: Use Manhattan distance for city grid if (rawStops.Count < 3) return rawStops; var optimized = new List<DeliveryStop>(); // ... 200 lines of cryptic logic ... return optimized; } Leo squinted. Manhattan distance? Their trucks ran across rural Montana, not New York. That explained the bizarre fuel overages last quarter.

He smiled, took a sip of rum, and turned his sailboat toward the horizon. Some mysteries, he thought, are meant to be solved—just not by him.