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?