One curve for 10,000 years of technology adoption (both axes linear)

x and y linear. Same fitted curve; it dives to zero at the end year. Zoom the x slider to 1750-2040 and y rescales.

source: Same estimates and sources as adoption-10k-years.pages.dev and adoption-since-1760.pages.dev (Our World in Data/ITU, World Bank, WHO/UNICEF, GSMA, archaeology refs); AI point = ChatGPT weekly users (OpenAI posts) extended on the fastest trend • transform: Dots = 21 estimates (teal: share of all people; green: share of each year's newborns vaccinated). Bars = range of intro year (across) and years to majority (up/down); fit uses the dots. Purple diamond = projection, NOT data: ChatGPT alone reaching half of humanity in Aug 2028 (exponential trend); it is in the fit. Fit: least squares on log10(years); straight line on the same points RMS 0.46. Drag or scroll the x axis to zoom into 1750-2040 (y rescales to what is shown). Car and plane (not yet majority, lower bounds) are in the tooltip only. • drawn 2026-10-21 03:09 UTC