Title: Philosophy 1010
1Philosophy 1010 Class 8/1/13
Title Introduction to Philosophy Instructor P
aul Dickey E-mail Address pdickey2_at_mccneb.edu
Tonight Turn in your Summary Statement of your
Class Final Essay Present your Study
Blue flashcards http//www.studyblue.com/folde
r/7010893 Chapter Three - Reality
Being Next Week Assignment Pop Quiz over
Chapters 3 4. All questions will be taken
from your flashcards.
2A pupil from whom nothing is ever demanded which
he cannot do, never does all he can. It is, no
doubt, a very laudable effort, in modern
teaching, to render as much as possible of what
the young are required to learn, easy and
interesting to them. But when this principle is
pushed to the length of not requiring them, to
learn anything but what has been made easy and
interesting, one of the chief objectives of
education is sacrificed. J. S.
Mill, Autobiography
3The Metaphysical View Idealism Platos
Theory of Forms (a refutation of Materialism)
4Idealism Platos Theory of Forms
- The view that reality is primarily composed of
ideas or thought rather than a material world is
the doctrine known as Idealism. That is, an
Idealist would say that a world of material
objects containing no thought either could not
exist or at the least would not be fully "real." - The earliest formulation of this view is given to
us by Plato. - In Platos Allegory of the Cave, the world of
shadows is representative of the material world
and is not fully real.
5Platos Theory of Forms
- What is the problem with which Plato is faced?
- How can one live a happy and satisfying life in a
contingent, changing world without there being
some permanence on which one can rely? (The
Ethical Problem) - Indeed, how can the world appear to be both
permanent and changing all the time. (The
Metaphysical Problem) - Plato observed that the world of the mind, the
world of ideas, seems relatively unchanging.
Justice, for example, does not seem to change
from day to day, year to year. - On the other hand, the world of our perceptions
change continuously. One rock is small, the next
large, the next?
6Platos Theory of Forms
- To resolve this problem, Plato formalized the
classic view of idealism in his doctrine of
Forms. - In everyday language, a form is how we recognize
what something is and unify our knowledge of
objects. (e.g How do we say two objects of
different size, color, etc. are both cars?) - Permanence comes from the world of forms or ideas
with which we have access through reason. - In Platos view, all the particular entities we
see as material objects are shadows of that
reality. Behind each entity is a perfect form or
ideal. Ideal forms are eternal and everlasting.
Individual beings are imperfect. - e.g. Roundness is an ideal or form existing in a
world different from physical basketballs.
Individual basketballs participate or copy the
form.
7Platos Theory of Forms
- Forms are transcendent, that is they do not exist
in space and time. That is why they are
unchanging. - Forms are pure. They only represent a single
character and are the perfect model of that
property. - Material objects are a complex conglomeration of
copies of multiple forms located in space and
time. - Forms are the cause of all that exists in the
world.
8What is the Essence of the Form of the Good?
- Forms are the cause of all that exists in the
world. Forms exist in a hierarchy with the Form
of The Good being the highest form and thus is
the first cause of all that exists. - Forms are the ultimate reality because they are
more objective than material things which are
subjective and vary in our perception of them. - For Socrates and Plato, the question What is a
thing? is the question what is the essence of
the thing? That is, the attempt is to identify
what (presumably one) characteristic or property
makes that thing what it is.
9What is the Essence of the Form of the Good?
- Further, Plato compares the power of the Good to
the power of the sun. The sun illuminates things
and makes them visible to the eye. The absolute
or perfect Good illuminates the things of the
mind (forms) and makes them intelligible. - The Good sheds light on ideas but, the vision of
the idea of the Good is, according to Plato, too
much for human minds. - When Plato emphasizes The Good as the cause (I.e.
an active agent) of essences, structures, and
forms, as well as of knowledge, he seems to be
invoking the idea of the Good as God. The Good as
absolute order makes all intermediate forms or
structures possible.
10Towards A Modern View Cartesian Dualism
11Descartes Modern Philosophy
René Descartes (15961650) was a creative
mathematician of the first order, an important
scientific thinker, and an original
metaphysician. He offered a new vision of the
natural world that continues to shape our thought
today a world of matter possessing a few
fundamental properties and interacting according
to a few universal laws. This natural world
included an immaterial mind that, in human
beings, was directly related to the brain. In
many ways, Descartes established Philosophy as a
modern endeavor and saw science and philosophy as
intricately linked in their pursuit of knowledge.
12Yet, Descartes embraced the Sientific Revolution
fundamentally differently that Galileo.
Descartes claimed to possess a special method,
which was variously exhibited in mathematics,
natural philosophy, and metaphysics, and which,
in the latter part of his life, included, or was
supplemented by, a method of doubt. He was still
fundamentally too much of a Rationalist in the
traditions of Plato. This method of conducting
science is quite contrary to the approach that
was gaining sway with Galileo. Galileo proposed a
methodology which did not first engage in a
metaphysical search for first principles on which
to base his science.
13(No Transcript)
14For Descartes, Galileo erred by without having
considered the first causes of nature, he has
merely looked for the explanations of a few
particular effects, and he has thereby built
without foundations But ultimately, it was
Galileo (not Descartes) that pushed the
Scientific Revolution forward.
15Galileo The Scientific Revolution Galileo
Galilei (1564 1642), was an Italian physicist,
mathematician, astronomer, and philosopher who
played a major role in the Scientific Revolution.
Galileo has been called the "father of modern
observational astronomy", the "father of modern
physics", the "father of science", and "the
Father of Modern Science Galileo proposes that
physics should be a new science based on
methods of observation not just on the methods of
reason. Thus, Galileo discovered many things
with his telescope, he first saw the moons of
Jupiter and the mountains on the Moon he
determined the parabolic path of projectiles and
calculated the law of free fall on the basis of
experiment.
16Galileo The Scientific Revolution He is known
for defending and making popular the Copernican
system, using the telescope to examine the
heavens, inventing the microscope, dropping
stones from towers and masts, playing with
pendula and clocks, being the first real
experimental scientist, advocating the relativity
of motion, and creating a mathematical physics.
His major claim to fame probably comes from his
trial by the Catholic Inquisition and his
purported role as heroic rational, modern man in
the subsequent history of the warfare between
science and religion. In 1636, a Hobbes travels
to Italy where he may have met with Galileo. With
the influence of Galileo, Hobbes develops his
social philosophy on principles of geometry and
natural science.
17Materialism
- Thomas Hobbes (1588-1679) rejects Cartesian
dualism claiming that Descartes Mind/Body problem
itself refutes dualism. - Since mind and body cannot interact, they cannot
both exist within human nature. - There can only be one realm of human nature and
that is the material world. - All human activities, including the mental, can
be explained on the paradigm of a machine.
18Materialism
- Hobbes was reductionist in that he believed that
one kind of purported reality (the mind) could be
understood entirely in terms of another (matter).
- New scientific techniques of observation and
measurement being used by Galileo, Kepler, and
Copernicus were making giant strides in
understanding the universe. - The spirit of his century suggested to Hobbes
that all reality would be explained in time in
terms only of the observable and the measurable. - Hobbes himself was unable to explain any mental
processes in terms of the physical. - Perhaps motivating Hobbes view was basically his
passionate faith in the advancement of science at
the time.
19The Prima Facie (or Self-evident) Case for
Materialism
- The argument from common sense
- If there are other realities besides the
material, can they causally interact with the
material world? - If so, how can this interaction happen? If they
can not interact, what does it mean to say that
such a reality exists? - Please note this may be more difficult that even
the mind/body problem where we do seem to have
direct evidence to believe that our own
consciousness exists.
20The Prima Facie (or Self-evident) Case for
Materialism
- The argument from science
- Science seems to be our most developed and useful
organized body of knowledge about the world by
focusing on observation and measurement of the
physical material world. In the history of
science, discussion of any kinds of entities
other than material entities largely have been
blind alleys. - The history of science is full of examples where
entities once thought to be necessary to explain
life and man have been replaced by fully causal
explanations in terms of chemicals and biological
processes. Doesnt it seem reasonable that this
also may be the case with mental states? (458)
21Modern Idealism
- The founder of modern Idealism is Bishop George
Berkeley (1685-1753). - Berkeley argued against Hobbes Materialism that
the conscious mind and its ideas and perceptions
are the basic reality. - Berkeley believed that the world we perceive does
exist. However that world is not external to and
independent of the mind. - The external world is derived from the mind.
- However, there is a further reality beyond our
own minds. Since we have ordered perceptions of
the world which are not controlled by an
individuals mind, they must be produced by Gods
divine mind. - (900)
22Pragmatism
- The major pragmatist philosophers are Charles S.
Pierce (1839-1914) and William James (1842-1910). - To the American Pragmatists, the debate between
materialism and idealism had become a pointless
philosophical exercise. - They wanted philosophy to get real (as we might
say today.) - The Pragmatists argued that philosophy loses its
way when it loses sight of the social problems of
its day. Thus, the Pragmatists focused on issues
of practical consequence. For them, asking even
what is real in the complete sense is not an
abstract matter.
23Pragmatism
- In terms of Metaphysics, James argued against
both sense observation and scientific method and
reason as the determinants of reality. - Reality is determined by its relation to our
emotional and active life. In that sense, a man
determines his own reality. What is real is what
works for us. - Pragmatism was refreshing and offered new
insights to various disciplines, particularly
psychology as a developing science. - Ultimately to most philosophers, pragmatism
failed to give a systematic response to the
traditional philosophical issues that Materialism
and Idealism were struggling with.
24Logical Positivism
- Similar somewhat to the American Pragmatists, the
Logical Positivists also viewed the debate
between materialism and idealism as a pointless
philosophical exercise. - Unlike the Pragmatists however, they identified
the problem with the metaphysical debate as a
problem in understanding language and meaning. - The Logical Positivists proclaimed that
Metaphysics was meaningless and both Materialists
and Idealists were making claims that amounted to
nonsense. They might be proposing theories that
seemed to be different but had no consequences to
our understanding of the world. - A.J. Ayer (1910 1989) proposed a criterion by
which it could be determined what was a
meaningful statement to make about reality.
25The Logical Positivist Criteria of Meaning
- Metaphysical statements such as God exists or
Man has a mind and body or ethical statements
such as Lying is wrong are meaningless for
Ayer. - Such statements do not make assertions about the
world, but in fact only express emotions and
feelings like poetry. - A statement can only be meaningful if it is
verifiable by means of shared experience.
26Anti-Realism
- Anti-realism rejects the notion that there is a
single reality. Rather, there is multiple
realities that are dependent upon how they are
described, perceived, or thought about. - Notice that whereas Berkeley emphasized
consciousness as the basis of the world, the
modern anti-realists focus on the pervasiveness
of language. - Is Realism a condition of sanity? Can it be
challenged? - How can you even know about reality without
language? Thus, what sense does it make to say
reality exists beyond language? - Is reality dependent on our contextualization
of things. Does this mean reality is just
whatever you think it is? Is this different than
subjectivity? Or is it an objective, shareable
cultural phenomena?
27The Problem of Free Will
The Prima Facie (or Self-evident) Case for Free
Will
- From common sense
- I have a direct consciousness of being able to do
otherwise. - I have a direct consciousness of causing my own
behavior. - I accept responsibility for my decisions.
28The Prima Facie (or Self-evident) Case for
Determinism
- From common sense
- Everything appears to have a scientific cause.
- It is not understood by what mechanism a mental
state such as a will or an intention can cause
behavior in the physical world. - We seem to be think it quite appropriate to
explain the behavior of others (and they us)
simply in terms of behavior or reasons that they
are unaware of, even when the person themselves
would have said they chose to do so.
29Determinism
- Determinists argue that previous events and the
laws of nature cause all human acts. - Human acts are predictable theoretically if we
knew all prior conditions and the laws governing
those conditions on the model of physics. - Sir Isaac Newton (1642 1727) argued that all
bodies in the universe both the smallest atoms
and the largest planets act in accordance with
the universal laws of nature.
30Determinism
- The Marquis de LaPlace (1749-1827) applied the
Newtonian conception and argued that humanity is
part of a causal chain, as is all phenomena. - For LaPlace, free will is an illusion that we
have since we are ignorant of the appropriate
laws of human nature. - John Hospers (1918 - ) argues that the
unconscious motivations for behaviors discovered
by Sigmund Freud determine all human action. - Subsequently in the view of hard line
determinists, humans are not responsible for
their acts.
31Libertarianism
- Libertarianism is the view that our choices are
not determined by the laws of nature. It is often
referred to as indeterminism. - One prevalent view of libertarianism is John Paul
Sartres existentialism. Sartre claims that
humans can be motivated by a future state, not a
past state. - Thus, we can conceive and choose what is not,
i.e. negativity or non-being. (that is, what does
not yet exist). To be determined would mean that
what is past or present could determine the
future (what does not exist.) - Although man is radically free, most forms of
existentialism allow that man can also choose to
sell out his freedom and act as if he is
determined by desires and emotions. Yet, man is
always responsible for his actions.
32Compatibilism
- Compatibilism argues that free will can be made
compatible with determinism. - The general strategy of compatibilism is
typically to re-define freedom. - Thomas Hobbes said that freedom was only the
absence of physical restraints and causal
determinants do not act as physical restraints. - Although classical compatibilist views such as
Hobbes appeal to our need to explain the paradox
of free will and determinism, most philosophers
find it unconvincing and ignores the real issue
that cannot be defined away.
33Chapter 4 Philosophy and God (a Metaphysical
Study)
34Does God Exist?
- Theism is the belief in a personal God who is
creator of the world and present in its processes
and who is actively engaged in the affairs of
humans. - Pantheism is the belief that God is the universe
and its phenomena (taken or conceived of as a
whole). God exists but is not personally involved
in the lives of men. - Atheism is the denial of Theism. (Metaphysical
View) It states that there is no God. - Agnosticism is the view that it cannot be known
whether God exists or not. (Epistemological
View) - According to Logical Positivism, the question
Does God Exist? is meaningless.
35First, Can We Even Make Sense of the Question?
- Surely before trying to answer the question, one
needs to ask the following questions - What does one mean by the word or concept of
God? - What is the sense of existence that is being
asserted when one says God exists. - Without being clear about these issues, the
argument often becomes mostly subjective.
36What Do We Mean by God?
- If we say that God is the creator of the
universe, do we mean -
- 1) that there is a Being that is God that could
or could not be the one who created the universe,
but as a matter of fact is the creator of the
universe? Or - 2) that by definition that God is the Being that
created the universe such that it would be a
logical error to say that God did not create the
universe. - Note that if we mean the first, we have still not
said who (or what) God is, apart from what he has
done. - If we mean the second, of course given the
inherent assumptions, then God exists. But we
have committed the logical fallacy of begging
the question.
37What is the Meaning of Existence that is Being
Used to Say that God Exists?
- Is existence a property of an entity? I say This
chair is black. Blackness is a property of the
chair. So that I would say that this chair has
the property of existing and thus there could
be chairs some of which have the property and
some dont. Then would I say that some chairs
exist and some do not like I would say some
chairs are black and some are not? - Or is existence of the chair identified in terms
of its relationship to a real world, say Hobbes
material world or Berkeleys mental world? But
then what sense does it make to say that Gods
existence is dependent upon a world that He
created and itself came into existence after
Him? - If not, then what is this form of existence for
God that we are asserting?
38Is it Possible to Talk About Something that Does
Not Exist?
- We generally believe that only things that exist
can have properties. Thus, by referring to God
with properties, I.e. omnipotent, do we prove
that God exists? - Probably not of course. We do refer to Santa
Claus as having a white beard and living at
the North Pole. And then turn around and say
Santa does not exist. - Bertrand Russell proposed a Theory of
Descriptions to account for how we refer to
things that appear to have properties or
characteristics but may or may not exist.
39How is it Possible to Talk About Something that
Does Not Exist?
- Russells solution is to take names to be
shorthand for descriptions. For example, Santa
Claus is a person who goes by the description
that he lives on North Pole, and delivers toys to
kids for Christmas, and the sentence Santa
doesnt exist should be understood as There is
no X, such that X is a person that lives on North
Pole, etc., etc. - Thus, presumably for Russell to say God does not
exist would be to say There is no Being, such
that the Being existed prior to the creation of
the universe, and then created the universe,
etc., etc.
40So, is Logical Positivism right after all?
- Theism is so confused and the sentences in which
'God' appears so incoherent and so incapable of
verifiability or falsifiability that to speak of
belief or unbelief, faith or unfaith, is
logically impossible. - A. J. Ayer, Language, Truth, and Logic
- Wikipedia suggests A. J. Ayer (1910-1989) was an
atheist. Ayers position on the existence of God
should not be confused with atheism. Of course,
claiming that God does not exist also lacks
analytic or empirical verifiability and is thus
also meaningless. - Many (perhaps most?) mid to late 20th century
philosophers who abandoned strict logical
positivism (including Russell and Wittgenstein)
still found Ayers response to this issue quite
credible. - On the other hand, maybe the question is too
obvious and important to give up on, so lets
stumble on .