The Making of Memory: Chapter 4 Notes – PT II  Technology both
enriches and constrains memories. It enriches them through tools
such as pens, books, and PDAs. And it constrains them through
the power of its metaphor.  First Rose explains a little about
scientific metaphors. There are three types of scientific
metaphor: the poetic, the evocative, and the structural. -
Poetic Metaphors provide little more than a useful visual image.
An example might be Rutherford’s early twentieth century
description of electrons as planets revolving around an atomic
sun. - Evocative metaphors provide both an image and a means of
transferring a principle from one sphere to another. The Ancient
Greeks tried to explain the movement of the sun as if it were
being pulled through the sky by fiery horse-drawn chariots. The
explanation is bogus, but the principle is transferable. -
Structural metaphors provide useful visual images, allow
transference from one sphere to another, and enable the
description of principles. So Harvey’s des