Over the last few decades, IT professionals honed their skills assembling pieces and parts, building competencies in the complexart of component procurement and custom integration.
Fully sentient robots like Kit are still a ways off, but computer programmers are starting to make serious progress in the horrendously complexart of artificial intelligence.
Like the Neanderthals, the newcomers had been busy, too, developing advanced tools and weapons, better navigational skills, trade, complex language, art and other forms of symbolic thinking.