!!better!! - Catia R21

If you hear a veteran designer say, "I miss R21," they do not miss the crashes or the healing failures. They miss a time when the tool was invisible, predictable, and entirely under their control—a time before the software started thinking for them.

It was used to design the fuselage of the A350, the dashboard of the Ford Fusion, and the chassis of the Tesla Model S (early production). It is the steel skeleton hiding beneath the carbon fiber of modern engineering. catia r21

A masterpiece of industrial maturity. No longer relevant for new greenfield projects, but forever immortal as the standard against which all stable CAD is measured. If you hear a veteran designer say, "I