For most of the story, sapiens looks like the final winner. Certainty then turns into a question: what if the species is only a stage, not an endpoint?
Biotechnology, genetic engineering, and cyborg like enhancements may become the next revolution. Humans may redesign bodies, extend life, and alter cognition. The same imagination that created gods and nations now reaches into flesh.
This opens a new ethical terrain. If people can be upgraded, who sets the standards? If intelligence can be engineered, what happens to equality, rights, and dignity? Old moral languages strain under new capabilities.
The ending refuses prophecy. The powers now being built could break the stories that once held societies together. Sapiens rose by rewriting reality in the mind. The next rewriting may happen in the genome, and “human” may stop naming a single kind of being.