They Are Watching Us
If I were part of an alien race and I wanted to constantly monitor the human race, here’s what I would do. I would embed small cameras in the roads, sidewalks, trails, hallways, anywhere that people walk, run, ride or drive. While this may sound like a massive undertaking to us – not just the placement of these cameras, but also watching all this footage – it would not be anything at all to a society that managed to get all the way to Earth.