To traverse the world men must have
maps of the world. Their persistent
difficulty is to secure maps on which their own need, or someone else’s need,
has not sketched in the coast of Bohemia.
This quotation from a letter of Walter Lippmann’s, “The World
Outside and the Pictures in Our Heads,” has always tickled me, and over the
years I have used it as the text of a final essay exam and the subject of
Paideia discussions.
I precede the Paideia by projecting a map of Bohemia to provide
the most obviously needed fact, but the two sentences typically take students
40-45 minutes to decipher, much less to “apply the statement to oneself.”
The syntax, certainly, is more complex than my students are
familiar with. It’s another example of
knowledge—of syntax as well as geography—being the prerequisite to critical
thinking.
Lippmann’s warning, of course, is that if our maps don’t
correspond to the landscape, our travels will go awry. Those maps won’t correspond to the terrain if
they have been influenced by our desires or someone else’s. What those desires might be is an open
question. Maybe we are unconsciously ambivalent
about going to Bohemia. Maybe our
parents or spouses or children or friends don’t want us traveling there. Maybe someone we trust has issues we’re not
aware of. Maybe we’re the victim of a
nefarious conspiracy. Lippmann’s warning
arises from the possibility that we may not know ourselves or our sources of
information well enough to be aware of designs on our plans.
But Lippmann’s statement also implies that we have to know
enough about the world in order to make sure our map of Bohemia doesn’t show a
coastline. If we are ignorant of
geography, we may bring the wrong clothes.
David Weisman uses a slight variation on the theme as he
explains the constructivist error in describing knowledge solely in terms of schema
or, for Piaget, developmental structures, not acknowledging “representation” in
their epistemology: “…there are rules
for making things, but no ideas of or about them. This is a grave omission, for no one walks
safely across the street in full sunlight or through a dark house at night
without maps and plans representing both these terrains and the instrumental
relations appropriate to them. Granting
Kant his constructive applications of thought, we insist that hypothesis be
given its due: making designs, music,
and proofs, we also make and test representations” (66).
Constructivism has difficulty explaining our instrumental
failures. If the world is only
accessible to us through our constructs, and it is impossible for us to
represent the world “as it is,” then how are we to understand it when the world
we create frustrates our desires, or, in Lipmann’s language, our needs?
(Weissman 76).
One of Weismann’s answers is that we are indeed capable of
representing the world. He writes that a
statement is true if it can be “instantiated” (87). G. E. Moore demonstrated the idea simply in
“A Defence of Common Sense”:
There
exists at present a living human body, which is my body. This body was born
at a certain time in the past, and has existed continuously ever since, though
not without undergoing changes; it was, for instance, much smaller when it was
born and for some time afterwards, than it is now. Ever since it was born, it has been either in
contact with or not far from the surface of the earth; and, at every moment
since it was born, there have also existed many other things, having shape and
size in three dimensions (in the same familiar sense in which it has), from which
it has been at various distances (in
the familiar sense in which it is not at a distance both from that mantelpiece
and from that bookcase than it is from the mantelpiece); also there have (very
often, at all events) existed some other things of this kind with which it was in contact (in the familiar sense in
which it is now in contact with the pen I am holding in my right hand and with
some of the clothes I am wearing… (107)
References
Glasersfeld,
Ernst Von. "Problems of Constructivism." Radical Constructivism in
Action: Building on the Pioneering Word of Ernst Von Glasersfeld. Ed.
Leslie P. Steffe and Patrick W. Thompson. Vol. 15. New York': Routledge Falmer,
2000. EBSCO. Print. Studies in Mathematics Education. 3-9.
Lippmann, Walter.
"The World Outside And The Pictures in Our Heads." American
Studies at the University of Virginia. University of Virgina, 1 Sept. 2009.
Web. 12 Dec. 2015. .
Moore, G. E.
"A Defence of Common Sense." Selected Writings. Ed. Thomas
Baldwin. London: Routledge, 1993. 106-33. Print. International Library of
Philosophy.
Weissman, David. Truth's
Debt to Value. New Haven: Yale UP, 1993. Print.