I've also seen my parent running backwards and forwards past his target. It only seems to happen between the research table and the big hut above it - but it's funny to see her standing there waiting while he does a "should I, shouldn't I" kind of marathon. And he always seems to go for the older women. He runs past the twenty year olds to get to an eighty year old - this is a family-friendly forum, so I'll stop there!!