x linear, y log. One fitted curve; it hits zero at the singularity year.
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. • drawn 2026-10-21 03:02 UTC