Direct Realism (Naive realism) Flashcards
State three points about Direct Realism:
1) It is the man on the street view
2) What you see is what you get
3) Doesn’t change depending on whether there is an observer or not
4) Objects are mind-independent
5) Objects are composed of matter
Name 5 headings of criticisms:
1) Argument from Perceptual Variation
2) Argument from Illusion
3) Argument from Hallucinations
4) Time Lag Argument
5) Argument from Science
Name four philosophers that criticised Direct Realism using Perceptual Variation:
1) Berkeley
2) Russell
3) Locke
4) Hume
Describe Berkeley’s input on criticising Direct Realism using Perceptual Variation:
Example= Red Cloud
From different perspectives it will look different colours.
Conclusion= Colour is an effect made upon something real. So colour is not objectively real (it is subject to change).
Describe Russell’s table example to illustrate his criticism of Direct Realism using Perceptual Variation:
The table looks different depending on the light conditions. People can perceive things in different ways (e.g. light conditions or people who are colour blind.)
Conclusion- Colour cannot be something which is in the table itself, appearance depends on light.
We can’t tell which colours the ‘real’ colour, all of the colours which can be seen have just as much right to be real, regardless of which is seen most often.
What example does Locke use to illustrate his criticism of Direct Realism using Perceptual Variation?
Dipping hands into water which is the same temperature, but asks the person to imagine one cup is hot and one is cold water. It would be a contradiction for the water to be both hot and cold. So hot and cold cannot be real properties, they are appearances/effects.
What do Locke and Hume conclude about the table example? (criticism of DR using Perceptual Variation).
We are directly aware of the tables appearance to our mind.
Describe how Locke and Hume elaborate on Locke’s idea of effects/appearances? (criticism of DR using Perceptual Variation).
They extend Locke’s idea of effects/appearances to shape and size. For example when drawing a table the angles will look different to what they are in actual; life, such as the right angles will not look like right angles because of the way we draw it. This is different to reality.
Conclusion- Objects can’t be changing shape/size/colour so they can’t be directly how we see them.
What do Locke and Hume conclude about appearance and reality?
Appearance changes, reality does not.
What does Russell describe appearances as? (criticism of DR using Perceptual Variation).
Sense-data
What is sense-data?
Immediate objects of perception. We cannot be mistaken about our sense-date.
What does Russell conclude relating the example of the table and sense-data? (criticism of DR using Perceptual Variation).
The existence of the table is based on sense-data so is perceived indirectly.
State two ways that direct realists would respond to the criticisms associated with Perceptual Variation:
1) We can still perceive the objects directly.
2) The difference in perception can be explained by external factors. i.e.. There is a reason for the variation in the way people perceive the world.
State two points and an example for the argument from illusion:
1) Our senses are subject to illusions.
2) What we immediately perceive cannot be what the world is actually like.
3) We cannot distinguish between something which is really there and something which is not.
eg. railway tracks/stick bent in water
State two ways which Direct Realists might respond to the argument from illusion:
1) We are directly seeing the light refraction (table appearing different colours).
2) eg. The stick appears bent due to physical, scientific factors.
3) Illusion does not mean that we cannot perceive the world directly.