I confess that I felt like bumping off one villager. He was the oldest kid right at the start of the game and had a dislike of 'learning'. I put him on the research table and had to keep dragging him back to work umpteen times before he finally made trainee scientist. After that, although he failed in his task often, at least he went back to work without prompting from me and eventually made master scientist. I tried retraining him as both a farmer and a builder but decided life was too short and in the end I've left him to carry on researching.

Although he's been a real pain, I never seriously considered poisoning him, however much I was tempted.