I’ve hit a bug where each time I start a new age, quest chains get reset. Confusing? You bet.
Like this: The original basic chain has you go to the first long house, get some rocks and sticks, fix the house, cook some lizards (Mmmmm, lizard) and so on. Hit the next age, and on top of everything else, it wants me to go back to the long house. And get the sticks and rocks. And cook the lizards.
This extends to side quests as well. If I’m on the second or third tier of woodsman (cutting down trees – whatever it’s called), on a new age I have both my current tier (150 trees) and novice (25 trees) (ignore the numbers, I guessed).