That was my first reaction too (and it was quite disappointing to see it reflected in another post so far below). From an educational POV, having an all-out rat

That was my first reaction too (and it was quite disappointing to see it reflected in another post so far below). From an educational POV, having an all-out rational play is valuable (up to a point), but that's it. It is like observing chemical reactions in a sterile medium, not in a natural one.