Last time, Pebble Konopinski #316 @1 said this to Mike Wingeier #1 @1619033:

 PK#@> Oh for goodness sake! that is just plain silly! have you ever noticed
 PK#@> how many  SHADES of blue there are?!? some may see green where you
 PK#@> swear there is blue! color is relative to the person veiwing it! as
 PK#@> "reality" is also only relative  to the person contemplating it! How do
 PK#@> you know what blue is? You were conditioned early in life to lable
 PK#@> anything within specified parameters as being blue...what if your
 PK#@> parents cones were just a bit off compared to your neighbors parents
 PK#@> and their spectrum of color did not correspond to theirs? It's all just
 PK#@> a process of labling in order to bring a semblance of order to what is
 PK#@> essentially chaos!

Reality is fact.  Perception is relative.  End of story.