Why early childhood (0–5) is under-appreciated
The fastest growth in human capability happens before kindergarten. More than 1 million new neural connections are formed every second in the first few years of life1, with synapse density peaking around age 1–22. After age 5, growth significantly slows3.
Right now, even highly-resourced families treat this period as a childcare logistics problem, biding their time until children hit kindergarten. Only then does the extremely prescriptive tiger-parenting begin: supplemental classes, tutoring, test prep. Though it is harder to measure and observe the progress of a child before they can talk, or take a test, the bulk of their learning window lies there.