734 Straight and Far Away

If you are walking in a wide street filled with many busy people coming and going everywhere, where would you be looking at? Most likely the point will be nearest persons around you and you will be busy trying to step aside a bit when someone comes toward you while making sure to secure your own path to move to the direction you are heading. Or you will be busy looking down your smartphone. 

Just for a change, it might be interesting if you dare to look into the far distance, as far as possible, actually the most distant point your eyes can catch. It's interesting because you don't have to worry about the risk of crashing into people in front of you or tripping on the stairs. Even if you try to focus on the far distant point, you may be surprised to know your eyes can sense a really wide range of visual information without actually focusing on them. 

Then the recognition of the visual information will shortly get three dimensional - yes surely the landscape around you is always three-dimensional but if you only look at the nearest smartphone panel or your feet your sight will not be seen as such. It's not two-dimensional but anyway lack of depth. Also if you stay focusing your eyes into the distant point, your sight is fixed and it enables you to sense the movement of the sight, people's coming and going or more clearly.