You might think knuckleballers throw soft, but they throw 60-65 mph, which is still probably harder than any us can throw. And then the ball moving unpredictably to boot?
Try catching a knuckleball first, and you’ll see how weird and scary just doing that is. The ball just darts anywhere, seemingly freezes in place for a fraction of a second, then darts off in another random direction. All the time moving faster than you realize…