Stress can do it every time ... and as in real life, if they don't really like what they are doing, they get STRESSED and the meter goes down!!! In our wanting to get more and more tech points, especially at the beginning, I can't speak for everyone, but I tended to be a slave master cracking the whip. EVERYONE ON THE RESEARCH TABLE THAT ISN'T FISHING!! CCCRRRAAACK!!! Then you start to see the subtleties of the game, the interactions, etc. and realize ... oops ... not good ... a more productive tribe, one that thrives, is a happy and well balanced tribe.

I never actually got to SEE the villager that reached 95, but the stats prove otherwise ... must have reached it while I was away. Usually, my oldest WHILE I AM ACTIVELY PLAYING is 76-80.