Picture this: I’m hunched over a 1939 Pratt & Whitney R‑985, the carburetor humming like a prop, the workshop smelling of fresh oil and a hint of old leather. My hands are slick with grease, the clock ticking toward the next flight test, and a vintage radio crackles with a pilot’s pre‑flight checklist. In that …
Use the Pressure: Eustress vs Distress Optimization for Growth