The Evolution

The Evolution

13

long-term memory. Similarly, given a Type I situation such as "black
man," memory might simply establish in memory an image of a black
man; or it could instead retrieve by intersection an image of a par-
ticular black man, say Muhammad Ali. These two processes are distinct
in that the first involves merely putting in memory the information
described (this will be termed construction), whereas the second goes
a step further by retrieving from memory a particularized version of
this description (this is intersection). In this paper all Type I
situations will be assumed to involve an available intersected concept,
as will all Type II and Type III situations.

Note that the various types of intersections may in many instances
be recognized by simple inspection. Thus the intersection of "sun"
by "bright yellow" is clearly a Type I intersection as "bright" and
"yellow" are clearly contained within the concept "sun"; and in the
same way "black man" clearly yields the concept "Muhammad Ali" by a
Type I intersection, inasmuch as "Muhammad Ali" is merely a particular-
ized version of "black man." Some other clearcut Type I intersections
are "white powder" ("cocaine"), "green gas" ("chlorine"), and "red
bird" ("cardinal").

Type II intersections such as "hospital blade" ("scalpel"), "Africa
striped" ("zebra"), "hospital vehicle" ("ambulance"), "car liquid"
("gasoline" or "oil"), and "French drink" ("wine") are identifiable
by the fact that the two parts of the intersection provide different
types of information to memory. Thus it is the job of the concept

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