Stephen Margheim's stated bar for Yippee and modern developer experience: an application suite of 10,000 tests (unit, system, browser) should run in ≤1 second (ideally 100 ms), application boot should take single-digit milliseconds regardless of size, and deployments should be sub-second. Achieved through saturating all cores with quickdraw, per-thread in-memory SQLite databases cloned from a single-fixture-step template, Phlex test-mode AST shortcuts, a Zig-based headless browser for system tests, and isolated deployment types that don't rebuild Docker images on every character change. Even runs CI locally from the laptop before deploying as an aspirational end-goal.