The test assumes uphill-travel is possible, based on empirical observation.

Step 1:  Laying a level on the street surface. Step 1:  Bubble-level placed on Empire Mine Road.

Step 2:  Reading the level.  Should the centermost-bubble point towards the right, then uphill-travel is possible.  Should that same bubble point towards the left (i.e., pointing towards Antioch city-limits), then it's truly a downhill stretch.  At that point, the perpception of uphill-travel is optical illusion.    

Step 3:  The results show that uphill-travel is not possible, proving that one's perception of the road is optical illusion.  The suggestion of uphill-travel has been concluded as urban legend.  


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