I had a whole village nearly starve to death because of one of the vials. It caused two villagers to switch places and one of the villagers was my Master Farmer. Well, turns out the new master farmer, after the switch, disliked swimming and parrots. The poor guy would panick and run away everytime he went near the ocean or the garden. Took me a while to figure out what was happining, and most of my food storage was gone by the time I could train someone new.

It was completely hilarious to me, but I felt bad for starving the little ones.