More examples of advantage

• Make a mold once and cast repeatedly
• Set up a jig once and machine repeatedly
• (Photo)Lithography: Create a (photo)mask and print with it repeatedly
• IKEA fastenings - 8 x standard shelf support, 32 x standard screw
• Jacquard loom
• Kirigami: fold paper, cut once, unfold to reveal several identical/symmetrical forms.
• Counterexample: paint every petal individually