You have been training for months for a half marathon.  You really want to win.  You ran sprints, hills, and long endurance training routes.  You have also been preparing mentally, thinking about how to pace yourself in the race.  Finally, it is race day.  You start the race at a steady pace not trying to …

Its all about perspective.  How we perceive something can be affected by what we see around it, or on it, or in it, or… I think you get the idea.  Take a look at the sign posts below.

The two poles are parallel.  Really they are! I know that you want to get a ruler to …