an application could take a given year and return a list describing the life situation of common people at that time by identifying impactful opportunities and knowledge not yet available.
this relates to a "tech-tree" of civilization, analogous to hierarchical progressions in games, but simplified to a basic when-and-where classification of common availability of impactful opportunities.
since availability can fluctuate, a minimum stability period is useful. definitions of "critical mass" (the population share having threshold access) and "meaningful impact" (significant effect on daily life of common people) are essential.
(year, region, population_share, concept, stability_years, certainty, source)
"available" at year y if:
"not yet" is the negation.
generative pre-trained transformer large language models body cameras medical c-sections medical lobotomy electricity led light-bulbs electricity cfl sustenance animal domestication sustenance potatoes communication newspapers economy coins law prisons nature stars nature galaxies nature thick atmosphere nature ozone layer nature magnetic field nature earth life mammals life humans materials spring steel materials stone materials bronze materials iron materials fire communication paper communication writing with feathers communication internet communication telephone communication television communication printing communication radio communication mail communication flatscreens communication dumbphones communication smartphones infrastructure formation of earth infrastructure light bulb infrastructure electricity infrastructure glassed windows infrastructure paved streets infrastructure plumbing infrastructure street lighting infrastructure led lighting becomes economically viable automation steam engine automation tractor automation transistor automation computer automation washing machine automation electric loom automation agriculture mobility automobile mobility carriages mobility airplanes mobility bicycle health penicillin health anesthesia health x-rays health vaccines health germ-theory entertainment photography entertainment black and white television entertainment color television organization calendar organization labor laws organization working hours organization population density organization literacy organization oral contraceptives / condom organization tampons organization slavery organization money organization law and order safety seatbelt laws safety car headlights safety building codes politics tribalism politics statehood politics federalism politics democracy politics liberalism politics monarchy 1600 telescope, microscope -1000000 fire 1455 printing 1765 steam engine 1804 railways 1826 photography 1844 telegraph 1879 electric light 1885 automobile 1901 radio 1903 airplane 1927 television 1937 computer 1947 transistor 1892 dmitri ivanovsky discovers viruses 1895 wilhelm conrad röntgen discovers x-rays 1896 henri becquerel discovers radioactivity 1880 adult literacy reaches 20% of the global population 1960 first oral contraceptive approved in usa 1900 electrification begins 1868 washing machine
electrification of homes and cities (early 20th century) mass production and assembly line (1910s) commercial aviation (1930s–1950s) antibiotics and modern medicine (1930s onward) nuclear energy and weapons (1940s) television becomes mainstream (1950s–1960s) civil rights movements and legal reforms (1950s–1970s) space exploration and moon landing (1960s–1970s) personal computing (1970s–1980s) internet becomes widespread (1990s) globalization and supply chain integration (1990s–2000s) smartphones and mobile computing (2007 onward) social media reshaping communication (2010s) mainstream adoption of generative ai (2020s)