AGI arrives around 2029, and through the 2030s-40s we merge with it via brain-computer interfaces, vastly expanding human intelligence. The Singularity is a continuation of humanity, not a replacement of it.
Exponential trends in computing and biotechnology have held for decades and show no sign of stopping. Intelligence is substrate-independent, so we will extend ourselves into non-biological substrates and keep growing.
A sustained, multi-decade breakdown of the exponential trends in price-performance of computation that the forecast depends on.