What was the alternative?
Scaling-up without significant architectural changes.
Evolution would design the alternative to be something slightly less capable than the minimum. /s
Really, the likelihood is that these mutations must have had an impact that far outweighs their space in the genome.
That’s how all our close competition got murdered by Homo Sapiens. Just significant difference in mental abilities.
We didn’t have any. The project manager set it at 3 story points.