Mathematics

PLACING a long vertical line on each side of a negative number will mean that you are referring to its absolute value -that is, the number of integers away from zero it is on a number line, whichever direction it is in.
That's an absolute rule in itself. 
Now if only we could apply mathematics to real life. 
What if you put two such lines on either side of anything and everything you see? 
"...at a time when tv was only black and white but color was all people could think about." 
Put blindness on one side, and compassion on the other.
Let's see what we can then do.