task 3 Flashcards
René Descartes
- 1596-1650
- reasoning: RATIONALISM (deductive)
- philosophy: DUALISM
- contributions:
- -> mathematics (Cartesian geometry & exponential notations)
- -> philosophy (rationalism/dualism/undeniable existence of thought (“cogito, ergo sum”)
- impact on science:
- -> mechanistic world view
- -> scientifiv study of body
- -> idea of innate knowledge
- -> importance of deductive reasoning
dualism (Descartes)
- view of body-mind relation
- -> mind is immaterial & independent of body
- central within religions/Descartes’ world view
- -> mind influences body
- human soul was divine:
- -> human thoughts/feelings cannot be studied by natural sciences
- -> responsibility of religion and philosophy
- soul has innate knowledge that could be recovered on basis of reasoning (RATIONALISM)
- in line with Catholic church’s & Plato’s thoughts
mechanistic view of universe (inlc. human body)
- everything in material universe can be understood as (complicated) machines
- rejects notion that things have goals & intentions (= animistic view)
- universe & matter in it is one big machine created by god
- human soul = exception: consciousness/volition > subjectivity of human experience
Aristotelian model vs Descartes’ mechanistic view
- Descartes rejected animistic part:
- -> everything in the universe is a designed mechanism, made to function independently
mechanistic view
–> IMPLICATIONS for advancement of science
- sharp distinction: religion <> science
- -> protection from each other
- -> Descartes’ vews primarily benefitted science
- questioning about how soul could influence body
–> Descartes suggested via pineal gland > was found to be unconvincing
» “soul” was put into mechanical part of universe & subject of natural investigation
monism
PHYSICALISM:
- matter > mind
IDEALISM:
- mind > matter
NEUTRAL MONISM:
- 3rd substance > body & mind
Isaac Newton
- 1643-1727
- inspired by Galilei’s studies on trajectory of cannonballs
- described gravitation and formulated the 3 laws of physics
- “princia mathematica” (1687)
- -> Newton presented his achievements (laws of physics)
IMPACT:
- showed that science could uncover the mechanisms underlying reality
- seemed to suggest that all scientific knowledge can be summarised in mathematical laws
epistemology
EPISTEMOLOGY:
- branch of philosophy concerned with the nature of knowledge
epistemology
|»_space; rationalism
RATIONALISM:
- knowledge is obtained by means of reasoning
- based on innate knowledge (nativism)
- deductive reasoning
> source of knowledge: reason
research method: deductive reasoning
main applications: logic, mathematics
main proponents: Plato, Descartes, Leibniz
epistemology
|»_space; empiricism
EMPIRICISM:
- knowledge is obtained by means of perceptual experiences (blank slate)
- uses empirical evidence as formation of ideas
- inductive reasoning
> source of knowledge: perception
research methods: observation, experimentation, inductive reasoning
main applications: natural sciences
main proponents: natural philosophers, Locke, Berkeley, Hume
John Locke
- 1632-1704
- father of empiricism
- -> rejected innate ideas
TWO KINDS OF EXPERIENCES:
1. deriving from sensation > sensory input
2. deriving from reflection > mind operates sensations
» reflection without sensation is not possible
TWO KINDS OF IDEAS:
1. simple ideas:
- received passively
- cannot be analysed/reduced (= elemental)
–> sensation & reflection
2. complex ideas:
- mind actively creates new ideas by combining simple ideas
- can be analysed/reduced
» ASSOCIATION: notion that knowledge results from linking simple ideas to form complex ones
TWO KINDS OF QUALITIES:
- primary qualities: characteristics in an object that exist whether or not we perceive them > OBJECTIVE (size, shape)
- secondary qualities: characteristics that only exist in our perception of the object > SUBJECTIVE (colour, odour, sound, taste)
Bishop Berkeley
- 1685-1753
- first person to raise discussion on idealism versus realism
- agreed with ideas of empiricism but only believed in secondary qualities (Locke)
» mentalism
mentalism
- all knowledge is a function of mental phenomena
- -> depends on the person perceiving/experiencing
- perception is subjective
- -> does not mirror external world
- all experience is within us > we never know exactly the physical nature of objects
epistemology
|»_space; idealism vs. realism
- in its extreme form, empiricism leads to idealism (contrasted by realism)
- -> Berkeley & Hume
IDEALISM:
- human knowledge is construction of mind
- it does not necessarily correspond to an outside world
» truth of knowledge: depends on coherence with rest of knowledge in social group
REALISM:
- human knowledge tries to reveal real properties of the outside world
» truth of knowledge: determined by correspondence of knowledge with real world
Kant
sought to reconcile rationalism & empiricism:
- argued that mind imposes structure on incoming sensory experiences
- it requires coherent & constant input to make sense out of it
> agreed with Berkeley/Hume:
- we cannot have direct knowledge of outside reality through perception
but wanted to proof:
- perception is much richer than stated by them two
- such perception can only exist in a world of things that is not in contradiction with it
makes two points:
- humans not only perceive, they also think about their perceptions
- human perception cannot arise in environment at odds with sensations
Hume & Berkeley on empiricism
BERKELEY:
- something is purely based on impressions acquired through observation > no guarantee that it is a faithful interpretation of the world
HUME:
- causes are never observed directly > they are derived from experiencing co-occurrence of phenomena