Interpretation of photographic images

The worm can put a number of interpretations on what it sees in Figure 9.2, but the addition of a cone as shown in Figure 9.3 may remind the worm of something it has seen before.

This an example of what generally happens when we look at a photograph. Our brain uses its enormous memory bank of similar images to interpret two-dimensional images in terms of

Figure 9.2 The question answered?

three-dimensional objects. The interpretation may not be correct because there is a limited amount of information available.

Just as the worm cannot see around the sides of the tower in Figure 9.2, so we are unable to look around an object in a photograph. We do not see anything new no matter how we look at the photograph (from above, from below, from the left or from the right).

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