The method that’s usually used to look up an entry in a phone book is not exactly the same as a binary search because, when using a phone book, you don’t always go to the midpoint of the sublist being searched. Instead, you estimate the position of the target based on the alphabetical position of the first letter of the person’s last name. For example, when you are looking up a number for "Smith," you look toward the middle of the second half of the phone book first, instead of in the middle of the entire book. Suggest a modification of the binary search algorithm that emulates this strategy for a list of names. Is its computational complexity any better than that of the standard binary search?