Well, I think I might have doomed my village to a slow death of starvation and cannibalism. I had no idea research would progress so slowly. I have two kids at around 4 yrs of age making seven villagers total, only two of who are any good at research, and it's 2500 points to go before I get farming. The berry tree is tapped out. I guess I would have hit this problem sooner if I hadn't discovered 400 foods in a crate on the beach.
So I guess I know what I need to do next time. Two villagers on berry duty, three on research. Don't have kids until I'm able to farm.
My problem was I didn't know that the berries would run out. i figured it was a fixed resource. D'oh!