Things started to go wrong and limitations started to appear. The 1970s saw the US hit three big limitations: the failure of Vietnam, the oil crisis, and the collapse of Iran. On the technology front, that's when the environmental and social downsides of technology started to become really prominent. Three Mile Island, CFCs, leaded petrol, and so on.
That's why all the 50s and 60s stuff is so breathlessly unconditionally optimistic, and subsequent material has switched to skepticism.
People have become used to "new technology announcement === a few years later we're going to hear about the terrible downside, while the originators lied about all the safety risks". Driverless cars are absolutely in the middle of that at the moment. Vaping is currently experiencing a safety backlash.
That's why all the 50s and 60s stuff is so breathlessly unconditionally optimistic, and subsequent material has switched to skepticism.
People have become used to "new technology announcement === a few years later we're going to hear about the terrible downside, while the originators lied about all the safety risks". Driverless cars are absolutely in the middle of that at the moment. Vaping is currently experiencing a safety backlash.