Yes in VV1 once youve gotten all levels of tech, the villagers will only voluntarily do three things, farming, and doctoring, breeding thats it, its been my experience that saving that last level of fertility, will suffice untill the last possable moment, and then once you have reached the point where you feel you are complete, then that last level is easy to get and then you get the GC and the rest of the puzzles, believe me you can go without him till then lol