It's an old rectangular building, and you fall right onto hard concrete. Let's say you also fall backside first to ensure that your spine is completely severed, and the impact on the back of your head would surely deliver the nail in the coffin (no pun intended). Given that I live in an already backwards third-world country, our medical "expertise" are highly unlikely to save me from this fatal blow. On top of it all, I almost have 0 body fat and I've already had a blood test a month ago which revealed calcium deficiency (and I still haven't changed my poor diet) so my bones would easily break (and there wouldn't be any "fat" to "cushion" the fall). I see this as a 100% certainty of death. Even if I end up a vegetable, I honestly couldn't care less, just let me sleep 24/7.