Piper Cub Offense
By Jef Raskin (unpublished)
The Piper J-3 Cub is one of the most iconic aircraft in aviation history — a simple, reliable, affordable airplane that taught more people to fly than perhaps any other design. In this essay, Raskin wrote about the Cub with the affection and knowledge of an experienced pilot.
Raskin and Aviation
Raskin was a licensed pilot who flew throughout his adult life. He was also an avid builder and flyer of model aircraft, and his aerodynamics research — including his widely cited work on the Coanda effect — grew directly from his passion for flight. The Piper Cub held a special place in his aviation experience.
The Cub’s Virtues
The Piper Cub embodies a design philosophy that Raskin admired: simplicity, reliability, and fitness for purpose. With its fabric-covered steel tube fuselage, fixed landing gear, and modest engine, the Cub strips flying down to its essentials. It does not impress with speed or technology; it earns devotion through honest, forgiving flight characteristics.
Design Lessons
For Raskin, the Cub was an example of good design in the broadest sense — a machine whose form follows its function so naturally that it feels inevitable. The same principles he admired in the Cub — simplicity, transparency, and respect for the user — guided his approach to computer interfaces.
A Pilot’s Perspective
The essay offered observations about flying the Cub that could only come from someone who had done it: the feel of the controls, the view from the open window, the particular way a Cub handles in different weather conditions.
This page is part of the Jef Raskin Archive, preserving the unpublished works of the creator of the Macintosh project.