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Hand matters: the blue wire-hand (left hand of a body) was worked exclusively by my right hand and, vice versa, to model the red wire-hand (right hand side of body) I used my left hand only. I thought that changing  tools“ and my skill to use it would influence the final work.
However, the discrepancies turned out to be far more profound: I had quite different feelings
when touching the material by right or left hand and my reactions in the course varied as well.