After I have played the Hard game once and solved all puzzles, I left the game as it is on Normal realtime hour. I also experimented with breeding. That is on v1.0 when I can use Village Sim Editor to edit the skills of the villagers.

With v1.1, I have just completely one game and recompleted it again. So far I am leaving it as it is to observe new features built into this version. Either it's me or it's the new v1.1 but now the builders are always kept busy and thus their skills are never obsolete. But as v1.0, there was no more for the Scientists to do but to learn new skills.