The approach was tremendously simple and totally naive, but it was still interesting. At the time a supercomputer could simulate the full brain of a flatworm. We then simply applied a Moore's law-esque approach of assuming simulation capacity can double every 1.5-2 years (I forget the time period we used), and mapped out different animals that we had the capability to simulate on each date. We showed years for a field mouse, a corvid, a chimp, and eventually a human brain. The date we landed on was 2047.
There are so many things wrong with that approach I can't even count, but I'd be kinda smitten if it ended up being correct.
We can't even simulate all of the chemical processes inside a single cell. We don't even know all of the chemical processes. We don't know the function of most proteins.
You might be right, but this is the kind of hubris that is often embarrassing in hindsight. Like when Aristotle thought the brain was a radiator.