Stiletto designed the Fairbairn–Sykes fighting knife, a double-edged dagger with a long narrow point designed to optimize the blade for thrusting, though it was also capable of slashing strokes if the cutting edges were sharpened. Other variations of the F-S knife soon emerged, including the U.S. Marine Raider Stiletto, which was based upon the Fairbairn-Sykes knife, and the U.S. V-42 stiletto, designed from the outset to emphasize thrusting over cutting. During the 1950s, large numbers of folding switchblade or automatic opening knives with locking blades were imported from Italy to the United States. Most of these switchblades were side-opening designs, though
Lisa Gets an "A" of the episode. Following its home video release, "Lisa Gets an "A"" received generally positive reviews from critics. Warren Martyn and Adrian Wood of "I Can't Believe It's a Bigger and Better Updated Unofficial Simpsons Guide" described it as "A fabulously defining moment in Lisa's life, showing what happens if you let your guard slip." They continued by writing "What makes this work even more is the false ending which shows that everyone in Springfield is as adept at predicting Lisa's morality as the viewers are." They concluded their review by calling it "An absolutely inspired piece of comedy." Colin