Thanks for the encouragement - I just got level 3 building, so I am hoping that something will happen. I am going to try selecting construction for a bunch of villagers and leaving them exploring all night to see what happens in the morning. I'll leave some master farmers to keep everyone eating, but I jjust won't worry about the research for a while (I only have science and medicine at level 2 now.) Hopefully, I will either have an event or they will find out where to build. Right now, they still are absolutely resistant to building anywhere where I have tried to put them...actually, I am tempted to start over because I think the rhythm of the game might be more fun if it was going along the regular pace (i.e. getting more than 15 villagers before getting to the 3rd level in everything, alternating puzzles and level progressions rather than doing all levels and then, hopefully, all puzzles.)

Thanks again!