Question

Why was Spencer Silver's work an essential part of

Answer 1

Answer:

He told Fry about the "unglue" that he had  discovered

Explanation:

Silver invented the formula for the weak glue and believed that there could be a commercial use for it. Silvers work was the basis for fry's invention because the sticky bookmarks basic mechanism was to stick to the paper through the weak glue and then unglue without damaging the paper.

If it weren't for silvers weak glue formula, bookmarks would not have come into existence.

Answer 2

Answer:

Spencer Silver's work an essential part of Fry's invention because he told Fry about the "unglue" that he had discovered. Option C is the right answer.

Explanation:

Spencer Silver several years ago had come up with a different kind of adhesive which was strong but could also be removed but he wasn’t sure or had very less idea as to how it would be of great help commercially. So, that it can be put to use, he had shown it many of his colleagues, one of whom was Fry. Since no one could come up with any bright ideas, the invention was kept aside. But one fine day Fry got an idea of using Silver’s invention to make bookmarks and thus, post-it bookmarks came into being.