Amelia attempted to solve n algorithmic problems. She wrote down one problem per page in her journal and marked the page with when she was unable to solve the problem and with when she was able to solve it. So the pages of her journal look like this: Use an adversary method to show that any method to find a page with an smiley on it might have to look at all n pages. Amelia attempted to solve n algorithmic problems. She wrote down one problem per page in her journal and marked the page with when she was unable to solve the problem and with when she was able to solve it. So the pages of her journal look like this: Use an adversary method to show that any method to find a page with an smiley on it might have to look at all n pages