The question of evolution is built into Last and First Men, in the sense of the previous post: we are entering a ‘middle era’ of the realization of a major ‘macro’ interval of the early modern.
Many will object to the use of the term ‘evolution’ here, and it is useful to limit the term with a qualifying category, e.g. ‘eonic evolution’, ‘evolution of civilization(s)’…
The objection is not valid: we use ‘evolution’ all the time for many different things. The evolution of civilization in WHEE is clearly defined, very novel, and leaves the question: did the earlier evolution of man go like this? We don’t know, but the model shows a very convincing overall outline of ‘evolution’ of the type that could work for earlier evolution.
The outcome of world history will be the discovery by man of the means to his own self-evolution, and this very complex subject can’t be resolved with the misleading ideas of natural selection.