This force that you can't see, can't feel and can't affect. I sound like a religious nut now. There's no way to explain that. Sure there is. First of all, has anyone tried to determine that its more than co-incidence.
People glance up all the time to see nothing there.
First you need to check how often people glance up, how often people are looked at and how often the two events coincide. Then you'll have some idea if you're looking at a co-incidence or not. Then you can start looking for explanations. All of these can cause us to do things without being aware of the cause, so you then have to run tests with people trying to tell if they're being glanced at with these variables removed. Then you can do some research into showing that they have some people detecting sense that science hasn't found yet.