"Batteries leading to mobile electronics" existed in the period 1890-1940. As https://www.radiolaguy.com/info/About%20battery%20radios.htm https://www.radiolag

"Batteries leading to mobile electronics" existed in the period 1890-1940. As https://www.radiolaguy.com/info/About%20battery%20radios.htm https://www.radiolaguy.com/info/About%20battery%20radios.htm points out, "Few homes in the early 1920s where wired for AC operated appliances." so most radios "were battery operated and required more than one type of battery." Here's a portable radio from 1924 - https://www.radiomuseum.org/r/zenith_super_portable.html https://www.radiomuseum.org/r/zenith_super_portable.html . The first commercial domestic clothes washer was 1937 - https://en.wikipedia.org/wiki/Washing_machine#Automatic_machines https://en.wikipedia.org/wiki/Washing_machine#Automatic_mach... , so not post-war. Robotic vacuums were 1990s - https://en.wikipedia.org/wiki/Robotic_vacuum_cleaner#History https://en.wikipedia.org/wiki/Robotic_vacuum_cleaner#History . > IMO that's like comparing chemical rockets to a warp drive Warp drives don't exist. I think you underestimate the impact of chemical rockets. And telegraphs. The telegraph made it possible for information to travel around the world within a day. "It's impossible to convey just how world changing" it was. > .. Globalization ... Globalization dates from at least the East India Company. Modern agriculture also requires a non-sustainable use of fossil fuels, destroys ecosystems to raise meat animals more cheaply, and generates huge monocultures tempting the next great blight. "Genetic engineering" also includes making farmers economically dependent on the patented seeds from a small number of seed companies. Speaking of which, post-war air conditioning, combined with cheap power from fossil fuels, meant that millions could move to places like Phoenix or Los Vegas and live in houses with styles meant for, for example, Cape Cod, rather than local vernacular architecture like thick adobe walls. Gigatons of CO2 emissions, to maintain a certain style, and because tearing down forests for stick building is cheaper in the short term.