1. ToK - Perception Sense perception and knowledge Our senses connect us with the world around us

2. ToK - Perception If you were forced to give up one of your senses – which would it be? We say: Seeing is believing Why not: Hearing is believing? Smelling is believing? Touching is believing? Tasting is believing?

3. ToK - Perception for a minute - be still …… What can you feel? for another minute - be still …… What can you hear? for a final minute - be still …… What can you smell?

4. ToK - Perception Sensation – which is provided by the world Interpretation – which is provided by the mind (external stimuli + mental processes)

5. ToK - Perception A way to become more aware of the role of mental processes:

6. ToK - Perception

13. They look different but the height and width are the same

14. ToK - Perception

15. Interpretation

17. Visual Grouping

19. ToK - Perception These have been visual illusions Our other senses can also mislead

20. ToK - Perception “It’s not what you look at that matters, it’s what you see.” H.D. Thoreau

21. Imagination, Expectation and Sense Perception You are walking down a dark alley……. The Emperor’s new clothes …… The gorilla during the basketball game experiment Experience affects the way we interpret sense data ToK - Perception

22. Kazemir Malevich

23. ToK - Perception Cy Twombly

24. ToK - Perception Carl Andre

25. ToK - Perception “It’s not what you listen to that matters, it’s what you hear.”

26. ToK - Perception “If a tree falls in a forest and there is no one there to hear it, does it make a sound?” Physical sound Experienced sound

27. ToK - Perception Sense Perception is an important source of knowledge but there are reasons for treating it with caution: We may misinterpret what we perceive We may fail to notice something We may misremember what we have perceived Sensory perception is selective Our senses have limitations Experience creates expectations Subjective factors – interests, moods – affect sensory perception

28. Some safeguards: Confirmation by another sense Coherence Independent testimony ToK - Perception

29. for an aural illusion – http://www.exploratorium.edu/exhibits/highest_ note/ex.about.fr.html click on ‘Discrete’ on the left side menu Reading: ‘ToK for the IB Diploma’ Page 105 – ‘Blind to Change’

30. ToK - Perception Where does this hole come from? An issue of Perception, or Reason?