a1 University of Ceylon
How can naïve realism defend itself in face of the illusion of the penny which looks elliptical when it is seen obliquely? Of late many philosophers have tried to deny that a penny looks elliptical when viewed obliquely: they have claimed that it still looks round. It may be true to say this of a small object like a penny, but it cannot be denied that the surfaces of objects in general do look different in shape when viewed from different angles: a large circular object, like a round table, does not look round but elliptical when viewed obliquely. Nevertheless, for convenience, I shall use the example of the penny. The reader may suppose, if he wishes, that the penny is viewed from a considerable distance, say ten feet.