Read the excerpt from The Evolution of Useful Things.But since it is 3M's policy (and that of other enlightened companies) to allow its engineers to spend a certain percentage of their work time on projects of their own choosing, a practice known as "bootlegging," Fry was able to gain access to the necessary machinery and materials and to spend nearly a year and a half experimenting and refining his idea for sticky - but not-too-sticky - slips of paper that could be used for "temporarily permanent" bookmarks and notes.Which statement best describes the relationship of ideas in this text?

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