"incredibly hard real engineering challenges" like building a battery powered car? A random list of real world innovations I can think of which are imo more im

"incredibly hard real engineering challenges" like building a battery powered car? A random list of real world innovations I can think of which are imo more impressive: - Large Hadron Collider - Multicompter. Had you expected 40 years ago the posibilities and commonness of camera drones or having hundreds of multicompter doing light shows? - you mention dubious inovations in software world but why dismiss the hardware development. Chips smaller than what people 40 years ago thought is physically possible, stacking chips onto each other, quantum computer, filling hard drives with helium to make them more dense (something many people where skeptial about when it first came up), using heat to make hard drives store even more data, e-ink displays - jetpacks - improvements in robotics (most popular Boston Dynamics) - nuclear fusion - most recently: flying a helicopter on another planet - maglev trains (but that kind of strech the 40 years range) - mRNA-vaccins - or e-bikes. Electic cars are revolutionary why not electric bicycles or planes. They are far from finished but solar powered planes exist. Is such a plane and the people working on it so much less impressive?