It was the slightest of rumbles. Both John and I felt it. John, who was at the controls, eased the yoke forward slightly and the rumble stopped. We landed and taxied to the ramp. We had an airplane full of pilots, but no one else had felt the rumble. It was the aerodynamic warning of a stall in our old Falcon 10. With hydraulically assisted, irreversible controls in this airplane, the pilots don’t get feedback. The rumble was the only warning we would receive. Had John reacted differently, the aircraft could well have stalled, and the aviation community would have racked up one more “loss of control” tragedy.