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Soap Box
Apologia
Why do I like to go barefoot?
A soft materials approach to cushioning

Five

Shearing, twisting, and bending classifes the motions under three different headings, but I count five `degrees of freedom'.

  1. Shearing fore and aft.
  2. Shearing side to side.
  3. Twisting about the yaw axis
  4. Bending about the roll axis
  5. Bending about the pitch axis