The water/concrete thing is just a simile, not a statement of fact. It's not meant to be "hitting water at X speed is like hitting concrete at X speed" - otherw

The water/concrete thing is just a simile, not a statement of fact. It's not meant to be "hitting water at X speed is like hitting concrete at X speed" - otherwise we'd have a lot of dead high divers on our hands. It's just meant to mean "hitting water at high speed isn't very forgiving". https://youtu.be/yGJqqDaKscQb https://youtu.be/yGJqqDaKscQb - 'Mythbusters for the Impatient' video showing dropping a pig onto concrete vs water. The concrete drop actually decapitates the pig!