Slight touch of paranoia, eh?
Oh no, just being observant, and a little tongue in cheek that I seem to have minions. Or had. Today they seem to be gone; or maybe they just all work (or sleep in?) weekday mornings, LOL! Sorry if you didn't get that!
But you do raise an interesting point, so I'll take the liberty (liberty is never just granted, it has to be taken) to expand. Would you notice if somebody were following you around all day? Would your wife? Your kids?
No answer needed; but I suspect that most people are oblivious to their surroundings, each happy in his or her personal bubble. That is why they always say "it's shocking" when they or somebody they knew were be-felled by some violent person.
"Nothing like that ever happens here!"
"It takes away your sense of security!"
"We feel so violated now!"
"Its just shocking!"
I'm not advocating paranoia. Even caveman could enjoy time with cavegirl from time to time as long as he paid attention to those tiger tracks!