Nice angle, but let’s keep it brutal. A harness is just a high‑strength rope, an anchor point, and a decent shock‑absorber. When you’re falling, the force is distributed over the belt and your shoulders, and the webbing’s elasticity gives you that few‑second “crash cushion.” If you want it to survive a 30‑metre fall, calculate the peak load: weight times gravity times fall distance, divided by the shock‑absorption distance. The webbing’s modulus, its break‑strength, and the dynamic factor of your body mass all come into play. If the harness fails, it’s not just physics—it’s pure adrenaline gone wrong. So, when you tweak that rig, treat the math like a recipe: measure, test, iterate, then brag about how much more you can shove the limits.