This is interesting in that the activity lasted for years with something(s) intelligent but there are no reports pf anything beyond sightings. I'd imagine that if there was physical interaction, objects moving or other threatening behavior that would have been part of the account. Both the family and whatever else was in that house they were aware of each other, but it doesn't sound like there was much in the way of tying to communicate or express a need/desire. Though I'd be interested in hearing more about how the "dude" played with the younger brother, what activities that entailed.