How would you respond? (A social experiment)

[chimp3]

Imagine, if you will, a public business you enjoy visiting more than any other place.  Now imagine that you frequent the place quite regularly.

Imagine, as you pull into the parking lot, seeing someone sitting in the passenger seat of a vehicle.  The person appears normal.  You go into the business, do your thing, spend an hour or two there, then you leave and still see the person in the passenger seat of the vehicle next to yours.  What is your initial thought/judgment of this person?

Now, fast forward a week.  Imagine that you have visited your favorite place several times and each time you've seen the vehicle in the parking lot that same person is sitting in the passenger seat.  Granted, the vehicle hasn't been there every time you've visited, but just enough to make you think harder.  Now what do you think of this person?

Now, fast forward a month.  You haven't been able to get enough of your favorite place, and you have continued to see the same vehicle with the same passenger quite regularly.  What is going on in your mind?  Are you in any way concerned?  Will you confront this person?

Imagine you walk into a Walmart. As you enter there are benches off to the left. There is an old man sitting on the bench. Nothing special. You show up that evening because you forgot the milk. The old man is not there. Two days later he is sitting there again. This time he smiles and nods at you. Three days later he is there again. He lifts his cane in salute and says "Nice day, isn't it, young man?" Again, sometimes he is there, and sometimes not. The paranoia grips deeper and deeper with each encounter. At one point you confront him " What are you actually up to and what kind of secret agent weaponry do you have in your cane?"