Owen had apparently been around Cecilia enough to imagine someone jumping off the falls into the water and breaking their arm or leg. Or neck. Obviously he had no idea if that was possible, as he hadn't seen the falls but hopefully no one would try it without making absolutely sure it was safe.
"My balance is fine," Owen said. "What was the ropes course?" He had never minded the physical challenges that TPTB threw at them. Those were generally things he excelled at. It was the mindfuckery that he hated, the psychological shit that They tried to push on them. Things like this? This he could do.