Philosophy Unit free essay sample

A thought or notion that cannot be true or false | God, Dog, Evil | Proposition | A statement which is either right/wrong | â€Å"God is pink† | Knowledge | Expressed in propositions that are formed by joining concepts, state something that is true or false | â€Å"The dog is Yellow† | Three Types of Knowledge | Propositional- â€Å"Know that† Knowledge by Acquaintance â€Å"Know of† capacity/Ability â€Å"Know how† | | A Priori | Propositional knowledge that we know is right before (sense) experience | â€Å"2+2=4 â€Å" | A Posteriori | Propositional knowledge that we know is right only after (sense) experience | â€Å"The sky is blue† | Synthetic | Not true by definition – Tells us something substantial about the world | â€Å"Snow is white† | Analytic | True by definition | â€Å"All Bachelors are unmarried men† | Necessary | Had to be true, true in all possible worlds | Maths – 2+2=4 | Contingent | Coul d be otherwise | â€Å"Obama was elected President† | Induction | Reasoning that draws conclusions from a finite collection of specific observations. | 1). The sun has always risen 2). The sun will always rise | Deduction | Reasoning in which the conclusion must follow the premises | 1). Man is mortal 2). Socrates is man 3). Socrates is mortal | Innate | Knowledge that is present in the mind at birth | Conceptual Schemes Kant | Intuitive | propositions that we know are right through pure thought | â€Å"I think therefore I exist† Descartes | Empiricism | Argues that you can only have analytic a priori knowledge | â€Å"All Widows were once Married† (Analytic a priori) | Rationalism | Argues that you can have analytic and synthetic a priori knowledge (Not Plato) | â€Å"God Exists† Descartes (Synthetic a priori) | All Ideas Come From Experience: Empiricism John Locke | David Hume | The mind is a Tabula Rasa – Blank Slate Sensation + Reflection Simple, complex, and abstract ideas Simple ideas come from sensation Complex + Abstract come from reflection | Sensation creates impressions in our minds Ideas are faint impressions of sensations which are vivid and forceful All thoughts are combinations of ideas e. g. Golden Mountain | Counter Arguments: Not all simple ideas come from experience Missing shade of blue Hume | Complex/Abstract ideas are not from experience general idea is required to form the abstract idea Curruthers | Some ideas are innate Ideas of God/Infinity – Descartes Veined Marble – Leibniz All knowledge is innate in the soul, just needs to be recalled Plato | Knowledge about what exists must be justified by sense experience: John Lock | 2 Fountains of Knowledge – Sensation + Reflection All ideas are from these – So all propositions must be as well | BUT | David Hume | Humes Fork Relations of Ideas – Analytic a priori knowledge Matters of Fact – Synthetic a posteriori knowledge Anything is Empty Metaphysical Speculation† and should be cast to the flames e. g. God | Humes Fork itself is empty metaphysical speculation – contradicts itself | Alfred Jules Ayer | Verification Principle Analytic or Empirically Verifiable (can be proven by experience) Anything else is meaningless e. g. Infinity | | John Stewart Mill | No a priori knowledge All knowledge is a posteriori and learnt through induction, including logic and mathematics | What about analytic a priori knowledge? â€Å"A bachelor is not married† | Strengths: Sets clear limits on appropriate objects of knowledge – Allows us to learn without being distracted by Empty Metaphysical Speculation The view reflects our experience of learning – It explains why we learn like we do Counter Arguments: Sense experience is never certain – Leads to scepticism Senses, Dreams, Deceiving Demon – Descartes Cave Analogy Plato | Some knowledge about what exists is known a priori Self/God/EW – Descartes Forms – Plato Causation, self, space Kant | Knowledge of relations of ideas is a priori Dont get more certain – True in all possible worlds Russell | Experience alone is unintelligible Needs to be mediated through a conceptual scheme – Kant, Saphir/Whorf | Mind contains innate knowledge: Plato | All knowledge is innate Slave Boy Analogy No education but still recognises the proof Learning as recollecting/remembering prompted by questioning Reason recognises truth not the senses | BUT Boy is prompted through questions | Leibniz | Veined Marble Mind not passive – contains natural inclinations and dispositions, habits or potentialities | | Kant | Conceptual Schemes are innate Categories are innate e. g. Space, Time, Self | The conceptual scheme is innate capacity/ability knowledge, not propositional knowledge | Counter arguments: This knowledge can be explained through intuition and deduction Reason discovers the knowledge Descartes | Innate knowledge is absurd – There is no universal assent Children and idiots dont know the simplest truths Locke | Innate knowledge is a near contradiction – Impossible to know but not know that you know Locke | Doctrine of Innate Ideas: Descartes | Ideas are either: Adventitious – From experience Factitious – Made up by us Innate – In the mind at birth | God, Infinity, and supreme perfection are not experienced or made up They must therefore be innate (Trademark Argument – We know of God, but do not experience God – He left his mark on us – This is innate) | Innate ideas provide the materials for reason to think develop knowledge without needing experience | Counter Arguments: John Locke | The mind as a Tubula Rasa (slank slate) at birth There is no innate knowledge only a posteriori knowledge We have of positive idea of infinity Infinity is defined in the negative never ending, only ever experience being able to add more on | David Hume | All ideas are formed from experience E. g. Golden Mountain – God is just qualities in man joined together and augmented without limit | Knowledge Through Intuition + Deduction Key Terms | Intuition | Self evident truths – Reached through pure thought | Deduction | Conclusion reached by following same premises e. g. Sudoku – Original numbers are self evident, other numbers discovered through reason. Answer is certain | Descartes | Intuition | Self as a thinking thing exists (The Cogito) | Deduction | God Exists External world exists (Ontological Argument) | Counter Arguments: Descartes intuitions and deduction dont work Existence of self not known through reason – Cogito only proves only the existence of thought, not a thinker e. g. BFG (Big Friendly Giant) Ontological Argument fails to prove the existence of God – Only proves hypothetical existence – Hume Proof for existence of external world depends on existence of a good God | Humes Fork Reason limited to tautologies/relations of ideas | No a priori knowledge Mill | Is certainty confined to introspection and the tautological? Key Terms | Introspection – Looking inwards i. e. Internal experiences Tautology – Saying the same thing twice E. g. Reverse Backwards (i. e. Analytic) | David Hume | Humes Fork Reason is limited to the meaning of words | Descartes | Experience is limited to immediate awareness We can never be sure that the external world corresponds to out experiences (we might be dreaming/demon) | Conclusions: David Hume | Yes | Humes Fork Only relations of ideas can be certain, all matters of fact are open to doubt | Descartes | No | Reason can discover certain knowledge of the world through intuition and deduction e. g. God exists | Kant | No | We can have certain synthetic a priori knowledge of our conceptual scheme e. g. We will perceive the world in space, time, causation | Yes | We can never know of the world of the noumena | Experience is intelligible due to a conceptual scheme: Kant | Mind is active – Organises experience into categories e. g. Filing Cabinet Ordered into Space/ time/causal relations/unity Conceptual scheme Universal, a priori, necessary | Implications | Synthetic a priori knowledge of the categories is possible e. g. Cookie cutter analogy – Cutter is set (conceptual scheme), What it is cutting can change, but still get the same shape Only know the phenomena, never the noumena Fishing Net/Blue Spectacles Analogy | Saphir/Whorf | Experience is ordered due to the language that we use Linguistic relativism – Societies organise experience by defining thing with words e. g. Inuit + Snow, and Hopi + Time Conceptual Scheme A posteriori, relative contingent | Implications | World as it is is still unknowable No innate scheme, rather a range of different schemes |