[FONT=q_serif]Someone once asked why do we feel "blue" when we are down... So I have pondered this. We may feel blue but we are no more blue than we actually are [/FONT][FONT=q_serif]yellow[/FONT][FONT=q_serif] or [/FONT]green[FONT=q_serif] or red. Did you know most ancient cultures did not even have a word for blue? Did you know that blue and green have often been identified as the same color?[/FONT]
[FONT=q_serif]Black and white were always the first colors (shades: dark and light) to be recognized in language. The first true color following that was red. After that [/FONT][FONT=q_serif]yellow[/FONT][FONT=q_serif] or green.
This same someone asked me what color does a smurf feel when he is down... So I pondered this as well. Perhaps a sad smurf feels [/FONT][FONT=q_serif]yellow[/FONT][FONT=q_serif]. Ye[/FONT][FONT=q_serif]llow [/FONT][FONT=q_serif]and blue are opposed to one another in how the visual cortex receive signals in the rods. It is impossible to see blue and [/FONT][FONT=q_serif]yellow [/FONT][FONT=q_serif]simultaneously. There are two types of opponent neurons that reside in the brain's visual cortex: red-green opponent neurons and blue-yellow opponent neurons.[/FONT]
[FONT=q_serif]These brain cells are called opponent neurons because they function in a binary way: the red-green opponent neuron can either signal red or green, but not both. And the blue-[/FONT][FONT=q_serif]yellow[/FONT][FONT=q_serif] opponent neuron can signal either blue or [/FONT][FONT=q_serif]yellow[/FONT][FONT=q_serif], but not both.[/FONT]
[FONT=q_serif]When you look at a pure [/FONT][FONT=q_serif]yellow[/FONT][FONT=q_serif] image, the [/FONT][FONT=q_serif]yellow[/FONT][FONT=q_serif] portion of the blue-[/FONT][FONT=q_serif]yellow [/FONT][FONT=q_serif]opponent neuron is excited and the blue portion is inhibited. Switch to a pure blue image and the blue portion of the opponent neuron is excited and the [/FONT][FONT=q_serif]yellow[/FONT][FONT=q_serif] is inhibited. Now imagine trying to see an image that is equally blue and [/FONT][FONT=q_serif]yellow[/FONT][FONT=q_serif] at the exact same time. The opponent neurons can't be both excited and inhibited simultaneously.[/FONT]
[FONT=q_serif]That, my friend, is why blue-[/FONT][FONT=q_serif]yellow[/FONT][FONT=q_serif] is an impossible color.[/FONT]
[FONT=q_serif]Don’t take my word for it, let a smurf verify this, but I am sure it is not easy being blue. Or [/FONT][FONT=q_serif]yellow[/FONT][FONT=q_serif]. And it’s impossible to be both blue and [/FONT][FONT=q_serif]yellow[/FONT][FONT=q_serif] at the same time.[/FONT]