How much can be deducted for insufficient exactness of shape on the bars?

In the context of judging gymnastics, particularly on the bars, the criterion of "insufficient exactness of shape" refers to how well a gymnast maintains proper form and alignment during their routines. This can include the body position, angles, and overall execution of skills performed on the apparatus.

A deduction of up to 0.20 is appropriate for significant deviations from the expected form, as large discrepancies can greatly affect the overall aesthetic and technical quality of the routine. Such deductions cater to a range of flaws in shape, including noticeable arching, lack of straight lines, or improper positioning during skills, all of which can detract from the effectiveness of the routine.

On the other hand, smaller deductions are reserved for minor issues that might occur, which is why those options reflecting lower deductions do not apply here. Thus, the option allowing for the highest deduction emphasizes the importance judges place on the execution and presentation aspects in order to assess the overall difficulty and artistry of the gymnast's performance accurately.