Perfect! May it be a vague, wandering walk, so you can enjoy the
  scenery smile emoticon

  x (algebra) is metaphorical. People often don't realize, in this
  days of the Glorification of all things Mathematics,that numbers
  themselves are metaphors - stand-ins for another concept. Yet we
  treat them as-if they have substance of their own, but they
  don't, except as a system when in use. But I must express my
  bias here. I made a book that nobody will buy because it's a
  mess. While everybody is looking to improve the specificity of
  things, I look to see what things have in common; INTENTIONALLY
  exposing their vagueness and metaphorical value.

  Over a weekend once a few years ago, I took the largest
  available English thesaurus used by linguists and such, and
  cross-referenced all of it to itself, to see what happened. I
  found a pattern. What is the meaning of this pattern? I don't
  know, except that in SOME WAY, each of the words in the 5 ...
  categories I guess that emerged, have _something_ in common with
  each other.