Tooling math
Every calculator on BetLets is implemented as pure-function TypeScript with unit-style assertions. Math is verifiable from the source - no hidden server, no API calls, no telemetry.
Editorial sourcing
Statistical claims cite their sources. Conceptual claims credit the public domain of sports analytics writing - Fivethirtyeight, Football Outsiders, KenPom, Cleaning the Glass, the broader sabermetric tradition - without copying it.