So many parts, aka "points of failure".,(reply>), They made the crazy variable speed moving sidewalk at the Toronto airport that never works properly.,(reply>), +TragedyParody Emergency friction brakes would do the trick too after all the issue with anything at height like that is never the lack of energy it's having too much energy and needing to dissipate it by any means available (ideally more slowly than just by striking the ground). All the power you could need is right there in your gravitational potential energy after all it's always guaranteed to be at least sufficient to get you to the ground at a safe velocity it's the leftover stuff you need to worry about.,(reply>), Babarudra examples?,(reply>), I immediately thought of Civilization IV but in truth, it's from Antoine de Saint-Exupéry.,(reply>), Ultimate Counter-Strike N00b if it aint broke, it hasn't got enough features.