In the case of a generation ship, you can just use selective breeding to keep people intelligent.
Presuming you can maintain a social structure for that many generations. Since you also need to maintain the ship, staying intelligent falls out as a subgoal of staying alive.
In the case of a generation ship, you can just use selective breeding to keep people intelligent.
Presuming you can maintain a social structure for that many generations. Since you also need to maintain the ship, staying intelligent falls out as a subgoal of staying alive.