The 57 and 67 story I heard from older heads was that the 57 wing used then-new computer modeling for the wing design, while the 67 was more traditional for ris

The 57 and 67 story I heard from older heads was that the 57 wing used then-new computer modeling for the wing design, while the 67 was more traditional for risk management. The 57 wing outperformed the computer models, making it more of a “hot rod” in some respects.