An unsettling experience.
Sometimes, during a walk you take a picture of the view. Then, some time later, you unexpectedly walk into the picture that you made some time ago. Then there is only one thing that you can do to restore symmetry. You must take a picture of the place from where you took the first picture, the place where you stood a short while ago. Now you've connected past and present and you have linked coordinates in space and time.
It only works if the experience is unplanned and genuinely unexpected.
Suppose ... if you were more sensitive and aware ... could you have seen the ghostly shape of your future self from the first set of coordinates? Or a transparent mirage of your past presence from the second set of coordinates? Could the camera catch these images, even though you don't see it yourself?
But maybe it's better to *not* see your double (Carlos Castaneda's - Don Juan's Teachings - Tales of power):
I'm going to begin telling you about the "double" or the "Other." The double is the sorcerer himself developed through his dreaming . The double is an act of power to a sorcerer. The double is the self; that explanation should suffice.
A sorcerer can double up, that's all one can say. No sorcerer knows where his Other is. A sorcerer has no notion that he is in two places at once. To be aware of that would be the equivalent of facing his double, and the sorcerer that finds himself face to face with himself is a dead sorcerer. That is the rule. That is the way power has set things up. No one knows why.
Wikipedia - The double
The picture on the left was taken during a nice walk along "Het Stichtse Lijntje" and you can download the guide for free.