Hello everybody, After Googling a little I find very few scientific critiques on SpaceX "technology". Let's forget about economics and purpose. Just the engineering factors. To make a rocket landing on end seems preposterously wasteful (fuel weight) and complicated (engine trust and orientation), and what about the body strength ? As far as I know some very cheap and reliable parachutes combine with some glorified "airlandingbag" (if sea water bothers you that much) would do the trick of reusability. What am I missing here ?