Why Haven't Airplanes Gotten Faster Since the 1960s?

While technology has advanced rapidly, commercial air travel speeds haven't significantly increased since the 1960s. The primary reason is fuel efficiency. Modern high-bypass turbofan engines, while more efficient, operate most efficiently at slower speeds. This leads aircraft manufacturers to design slower planes, which are also cheaper to build. Supersonic flight, like Concorde, existed but was limited by sonic booms. Future supersonic business jets offer hope, but their political feasibility is uncertain.