The word is generally accepted to mean a combination of function and sparkle, hence, farkle. Motorcycle enthusiasts may install accessories, called farkles (also spelled farkel), to customize their machine. One source attributes the term to Pete Wells, the organizer of a 1997 Honda ST1100 rally.
Instability is the quality of not being stable, balanced, or predictable. If you've ever walked out onto a diving board, you've probably noticed its instability â meaning the board bends and bounces as you move. Instability comes from the Middle French word instabilite, meaning unsteadiness.. Instability can refer to objects that are not stable, but it can also describe unpredictable situations or relationships. For example, you might hear people talk about economic instability.
Others consider instability to exist only. when sudden aberrant motions such as a visible slip or catch. are observed during active movements of the lumbar spine or. when a change in the relative position of adjacent vertebrae is.