methylatedghosts
Can't brain. Has dumb.
So far as I'm aware, Luke, most of the scientists I've read on it believe it is innate. Which would imply it's been around for a very long time. The argument that it is innate stems from how widespread it is.
hmm... I'm honestly finding it difficult to believe that. Mostly because I don't personally have to much issue with a couple finding a quiet corner to go at it, even if it is within my line of sight. Naturally, I would not sit and watch, but rather grant them privacy by way of simply letting them be and not drawing attention to it.