1. Capable of being easily led, taught, or managed; docile; manageable; governable.
  2. Capable of being shaped; malleable.
  3. Capable of being handled or touched; palpable; practicable; feasible; serviceable.
  4. Sufficiently operationalizable or useful to allow a mathematical calculation to proceed toward a solution.
  5. Of a decision problem, algorithmically solvable fast enough to be practically relevant, typically in polynomial time.

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