[...The extraordinary memory of primitive people has been attributed to the fact that owing to the absence of any convenient means of making written records they had to depend upon their memories, which were strengthened accordingly; but in view of the known facts about
Every time I go to the optometrist, they want to slightly change my prescription. I always resist these changes for the following reasons: 1) I used to go to the optometrist yearly. Every year, they would change a lens (and it was always the opposite lens as the year before). ...