4. Asymmetry
A. Replace a symmetrical form with an asymmetrical form.
B. If an object is already asymmetrical, increase the degree of asymmetry.
Example:
• Bicycle gears.
• Make one side of a tire stronger than the other to withstand impact with the curb.
• Change from circular O-rings to oval cross-section to specialized shapes to improve sealing.
• While discharging wet sand through a symmetrical funnel, the sand forms an arch above the opening, causing irregular flow. A funnel of asymmetrical shape eliminates the arching effect.
• Gondola hull.
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