Human curve For each year since 1970, estimate global births and multiply by a brain compute assumption (10^14, 10^16, or 10^18 ops per second). Then sum across years to get a cumulative total.
Chip curve For each year since 1970, estimate total FLOPS shipped that year (historical anchors with interpolation, then a growth rate), then sum across years to get a cumulative total.
Controls The buttons and slider change the assumptions and recompute the series immediately. The calculus toggle switches between cumulative, rate (d/dt), and acceleration (d²/dt²) views.