Are hydrogen blimps actually a bad invention? They were perfectly useful for many years, transported a whole lot of people a whole long way in an age when it wa

Are hydrogen blimps actually a bad invention? They were perfectly useful for many years, transported a whole lot of people a whole long way in an age when it was the best and most comfortable way to travel long distances. There was one high-profile accident of which we just happen to have footage, but I'm not sure if the death rate per passenger mile is any worse than that of 1920s-30s planes. Segways, meanwhile, are a perfectly reasonable invention plus a bit of stupid marketing hype which media outlets were dumb enough to buy into. But the mall security guard market alone is enough to justify the existence of the Segway.