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Function,
Affordance,
and the How 岳看
Disclaimer!
Agenda
Agenda
 Who am I
Agenda
 Who am I
 The unambiguous function
Agenda
 Who am I
 The unambiguous function
 Does it have to be useful?
Agenda
   Who am I
   The unambiguous function
   Does it have to be useful?
   The context of use
Agenda
   Who am I
   The unambiguous function
   Does it have to be useful?
   The context of use
   Not 1:1
Agenda
   Who am I
   The unambiguous function
   Does it have to be useful?
   The context of use
   Not 1:1
   Ascribing functions
Agenda
   Who am I
   The unambiguous function
   Does it have to be useful?
   The context of use
   Not 1:1
   Ascribing functions
   Affordances and other clues
Agenda
   Who am I
   The unambiguous function
   Does it have to be useful?
   The context of use
   Not 1:1
   Ascribing functions
   Affordances and other clues
   The How 岳看
Who am I


 Charlotte Branth Claussen
            Wannabe Techwriter
            Technical Writer at Oticon
            BA in Art History
            MA in Cognitive Semiotics
The unambiguous function
The unambiguous function
The unambiguous function
The unambiguous function
The unambiguous function
The unambiguous function
The unambiguous function
The unambiguous function


a piece of furniture with many family
members gathered in one piece. Here is the
sofa, the coffee table, the floor lamp and the
bookcase in one, coherent form.
                                        (Stelzner 2005)
The unambiguous function


Hence, the function becomes less clear, but in
return Hammerstr淡ms piece of furniture
activates a reflection of furniture designs
traditional anchor point, the function.
                                       (Stelzner 2005)
The unambiguous function


In this way, it is no longer the primary function,
Hammerstr淡m designs, but on the contrary a
modernistic, one-sided function, she
challenges.
                                         (Stelzner 2005)
The unambiguous function


discusses design as an autonomous unity, but
still keeps a certain functionality  just another
type than the functionalistic function.
                                        (Stelzner 2005)
The unambiguous function


While the modernist design has a clear, explicit
functionality, the radical contemporary design
challenges and discusses the modernistic
naturalized functionality.
                                        (Stelzner 2005)
The unambiguous function
The unambiguous function


It is a chair that radiates the epitome of
function. The form itself becomes the chairs
decoration so that its symbolic values will
absolutely not overshadow its primary
function
                                       (Stelzner 2005)
The unambiguous function

I wanted to show the kinship of different pieces
of furniture. For instance, you dont need to be
told that when you buy a floor lamp, it has to
stand next to the armchair. You also know where
to put the coffee table. It is not something you
need to learn. Habits and tradition tell us how is
should be.
                                    (Hammerstr淡m 2005)
The unambiguous function

I wanted to show the kinship of different pieces
of furniture. For instance, you dont need to be
told that when you buy a floor lamp, it has to
stand next to the armchair. You also know where
to put the coffee table. It is not something you
need to learn. Habits and tradition tell us how is
should be.
                                    (Hammerstr淡m 2005)
The unambiguous function

I wanted to show the kinship of different pieces
of furniture. For instance, you dont need to be
told that when you buy a floor lamp, it has to
stand next to the armchair. You also know where
to put the coffee table. It is not something you
need to learn. Habits and tradition tell us how is
should be.
                                    (Hammerstr淡m 2005)
The unambiguous function

I wanted to show the kinship of different pieces
of furniture. For instance, you dont need to be
told that when you buy a floor lamp, it has to
stand next to the armchair. You also know where
to put the coffee table. It is not something you
need to learn. Habits and tradition tell us how is
should be.
                                    (Hammerstr淡m 2005)
The unambiguous function


          primary functions
                 vs
         secondary functions
The unambiguous function


  primary functions    inner dimensions
         vs                    vs
 secondary functions   outer dimensions
The unambiguous function


  primary functions    inner dimensions
         vs                    vs
 secondary functions   outer dimensions
The unambiguous function

Primary function:
The unambiguous function

Primary function:
 Purpose
The unambiguous function

Primary function:
 Purpose
 Mode of operation
The unambiguous function

Primary function:
 Purpose
 Mode of operation
 Possibility
The unambiguous function
The context of use
Not 1:1
Layered semantics:
Not 1:1
Layered semantics:
 Normal use
Not 1:1
Layered semantics:
 Normal use
 Problem solving
Not 1:1
Layered semantics:
 Normal use
 Problem solving
 Repairs
Not 1:1
Layered semantics:
 Normal use
 Problem solving
 Repairs
 Deeper knowledge
Not 1:1


          Standard function
                 vs
           Ad hoc function
Does it have to be useful?
Does it have to be useful?
Does it have to be useful?
Ascribing functions
The HIPE theory of function:
Ascribing functions
The HIPE theory of function:
 History
Ascribing functions
The HIPE theory of function:
 History
 Intentional perspective
Ascribing functions
The HIPE theory of function:
 History
 Intentional perspective
 Physical environment
Ascribing functions
The HIPE theory of function:
 History
 Intentional perspective
 Physical environment
 Event Sequences
Ascribing functions
A function can be ascribed if:
Ascribing functions
A function can be ascribed if:
 We believe that the artifact has the physical
  capacity to perform the function in order to
  complete a use plan
Ascribing functions
A function can be ascribed if:
 We believe that the artifact has the physical
  capacity to perform the function in order to
  complete a use plan
 We can justify our belief
Ascribing functions
A function can be ascribed if:
 We believe that the artefact has the physical
  capacity to perform the function in order to
  complete a use plan
 We can justify our belief
 A designer has developed the use plan and
  selected the artifact for its capacity
Ascribing functions
A function can be ascribed if:
 We believe that the artifact has the physical
  capacity to perform the function in order to
  complete a use plan
 We can justify our belief
 A designer has developed the use plan and
  selected the artifact for its capacity
 The designer has passed on the use plan
Ascribing functions
A function can be ascribed if:
 We believe that the artifact has the physical
  capacity to perform the function in order to
  complete a use plan
 We can justify our belief
 A designer has developed the use plan and
  selected the artifact for its capacity
 The designer has passed on the use plan
Ascribing functions
A function can be ascribed if:
 We believe that the artifact has ought to have
  the physical capacity to perform the function
  in order to complete a use plan
 We can justify our belief
 A designer has developed the use plan and
  selected the artifact for its capacity
 The designer has passed on the use plan
Affordances and other clues
Affordances and other clues


the affordances of the environment are what
it offers the animal, what it provides or
furnishes, either for good or ill "
                                     (Gibson 1977 )
Affordances and other clues


the affordances of the environment are what
it offers the animal, what it provides or
furnishes, either for good or ill "
                                     (Gibson 1977 )
Affordances and other clues


the affordances of the environment are what
it offers the animal, what it provides or
furnishes, either for good or ill "
                                     (Gibson 1977 )
Affordances and other clues
 Real affordances
Affordances and other clues
 Real affordances
 Perceived affordances
Affordances and other clues
 Real affordances
 Perceived affordances
 Hidden affordances
Affordances and other clues
   Real affordances
   Perceived affordances
   Hidden affordances
   Empty (false) affordances
Affordances and other clues
   Real affordances
   Perceived affordances
   Hidden affordances
   Empty (false) affordances
   Correct rejections
Affordances and other clues
   Real affordances
   Perceived affordances
   Hidden affordances
   Empty (false) affordances
   Correct rejections
   Conventions
Affordances and other clues
   Real affordances
   Perceived affordances
   Hidden affordances
   Empty (false) affordances
   Correct rejections
   Conventions
   Canonical affordances
Affordances and other clues
   Real affordances
   Perceived affordances
   Hidden affordances
   Empty (false) affordances
   Correct rejections
   Conventions
   Canonical affordances
   Sequential affordances
Affordances and other clues
Affordances and other clues
Affordances and other clues
The How 岳看

"For designers it most probably is important to
understand artefacts in terms of functions: in
design methodology, for instance, designing is
often defined as a process that starts with
specific required functions and that ends with a
physical description of an artefact that can
perform these functions.
                           (Vermaas and Houkes 2006:32-33)
The How 岳看

"For designers it most probably is important to
understand artefacts in terms of functions: in
design methodology, for instance, designing is
often defined as a process that starts with
specific required functions and that ends with a
physical description of an artefact that can
perform these functions.
                           (Vermaas and Houkes 2006:32-33)
The How 岳看

"For designers it most probably is important to
understand artefacts in terms of functions: in
design methodology, for instance, designing is
often defined as a process that starts with
specific required functions and that ends with a
physical description of an artefact that can
perform these functions.
                           (Vermaas and Houkes 2006:32-33)
The How 岳看

"But for users this understanding may be
unnecessarily full. Users may take artefacts
simply as means for attaining desired ends,
without making the additional step of
expressing this as that artefact have functions."
                              (Vermaas and Houkes 2006:33)
The How 岳看

"But for users this understanding may be
unnecessarily full. Users may take artefacts
simply as means for attaining desired ends,
without making the additional step of
expressing this as that artefact have functions."
                              (Vermaas and Houkes 2006:33)
The How 岳看
Interaction with an object or an application:
The How 岳看
Interaction with an object or an application:
 What is our goal in a given situation?
The How 岳看
Interaction with an object or an application:
 What is our goal in a given situation?
 Are we confident that we get the clues right?
Thoughts?

More Related Content

Function, Affordance, and the "How to"

  • 5. Agenda Who am I The unambiguous function
  • 6. Agenda Who am I The unambiguous function Does it have to be useful?
  • 7. Agenda Who am I The unambiguous function Does it have to be useful? The context of use
  • 8. Agenda Who am I The unambiguous function Does it have to be useful? The context of use Not 1:1
  • 9. Agenda Who am I The unambiguous function Does it have to be useful? The context of use Not 1:1 Ascribing functions
  • 10. Agenda Who am I The unambiguous function Does it have to be useful? The context of use Not 1:1 Ascribing functions Affordances and other clues
  • 11. Agenda Who am I The unambiguous function Does it have to be useful? The context of use Not 1:1 Ascribing functions Affordances and other clues The How 岳看
  • 12. Who am I Charlotte Branth Claussen Wannabe Techwriter Technical Writer at Oticon BA in Art History MA in Cognitive Semiotics
  • 20. The unambiguous function a piece of furniture with many family members gathered in one piece. Here is the sofa, the coffee table, the floor lamp and the bookcase in one, coherent form. (Stelzner 2005)
  • 21. The unambiguous function Hence, the function becomes less clear, but in return Hammerstr淡ms piece of furniture activates a reflection of furniture designs traditional anchor point, the function. (Stelzner 2005)
  • 22. The unambiguous function In this way, it is no longer the primary function, Hammerstr淡m designs, but on the contrary a modernistic, one-sided function, she challenges. (Stelzner 2005)
  • 23. The unambiguous function discusses design as an autonomous unity, but still keeps a certain functionality just another type than the functionalistic function. (Stelzner 2005)
  • 24. The unambiguous function While the modernist design has a clear, explicit functionality, the radical contemporary design challenges and discusses the modernistic naturalized functionality. (Stelzner 2005)
  • 26. The unambiguous function It is a chair that radiates the epitome of function. The form itself becomes the chairs decoration so that its symbolic values will absolutely not overshadow its primary function (Stelzner 2005)
  • 27. The unambiguous function I wanted to show the kinship of different pieces of furniture. For instance, you dont need to be told that when you buy a floor lamp, it has to stand next to the armchair. You also know where to put the coffee table. It is not something you need to learn. Habits and tradition tell us how is should be. (Hammerstr淡m 2005)
  • 28. The unambiguous function I wanted to show the kinship of different pieces of furniture. For instance, you dont need to be told that when you buy a floor lamp, it has to stand next to the armchair. You also know where to put the coffee table. It is not something you need to learn. Habits and tradition tell us how is should be. (Hammerstr淡m 2005)
  • 29. The unambiguous function I wanted to show the kinship of different pieces of furniture. For instance, you dont need to be told that when you buy a floor lamp, it has to stand next to the armchair. You also know where to put the coffee table. It is not something you need to learn. Habits and tradition tell us how is should be. (Hammerstr淡m 2005)
  • 30. The unambiguous function I wanted to show the kinship of different pieces of furniture. For instance, you dont need to be told that when you buy a floor lamp, it has to stand next to the armchair. You also know where to put the coffee table. It is not something you need to learn. Habits and tradition tell us how is should be. (Hammerstr淡m 2005)
  • 31. The unambiguous function primary functions vs secondary functions
  • 32. The unambiguous function primary functions inner dimensions vs vs secondary functions outer dimensions
  • 33. The unambiguous function primary functions inner dimensions vs vs secondary functions outer dimensions
  • 35. The unambiguous function Primary function: Purpose
  • 36. The unambiguous function Primary function: Purpose Mode of operation
  • 37. The unambiguous function Primary function: Purpose Mode of operation Possibility
  • 42. Not 1:1 Layered semantics: Normal use Problem solving
  • 43. Not 1:1 Layered semantics: Normal use Problem solving Repairs
  • 44. Not 1:1 Layered semantics: Normal use Problem solving Repairs Deeper knowledge
  • 45. Not 1:1 Standard function vs Ad hoc function
  • 46. Does it have to be useful?
  • 47. Does it have to be useful?
  • 48. Does it have to be useful?
  • 49. Ascribing functions The HIPE theory of function:
  • 50. Ascribing functions The HIPE theory of function: History
  • 51. Ascribing functions The HIPE theory of function: History Intentional perspective
  • 52. Ascribing functions The HIPE theory of function: History Intentional perspective Physical environment
  • 53. Ascribing functions The HIPE theory of function: History Intentional perspective Physical environment Event Sequences
  • 54. Ascribing functions A function can be ascribed if:
  • 55. Ascribing functions A function can be ascribed if: We believe that the artifact has the physical capacity to perform the function in order to complete a use plan
  • 56. Ascribing functions A function can be ascribed if: We believe that the artifact has the physical capacity to perform the function in order to complete a use plan We can justify our belief
  • 57. Ascribing functions A function can be ascribed if: We believe that the artefact has the physical capacity to perform the function in order to complete a use plan We can justify our belief A designer has developed the use plan and selected the artifact for its capacity
  • 58. Ascribing functions A function can be ascribed if: We believe that the artifact has the physical capacity to perform the function in order to complete a use plan We can justify our belief A designer has developed the use plan and selected the artifact for its capacity The designer has passed on the use plan
  • 59. Ascribing functions A function can be ascribed if: We believe that the artifact has the physical capacity to perform the function in order to complete a use plan We can justify our belief A designer has developed the use plan and selected the artifact for its capacity The designer has passed on the use plan
  • 60. Ascribing functions A function can be ascribed if: We believe that the artifact has ought to have the physical capacity to perform the function in order to complete a use plan We can justify our belief A designer has developed the use plan and selected the artifact for its capacity The designer has passed on the use plan
  • 62. Affordances and other clues the affordances of the environment are what it offers the animal, what it provides or furnishes, either for good or ill " (Gibson 1977 )
  • 63. Affordances and other clues the affordances of the environment are what it offers the animal, what it provides or furnishes, either for good or ill " (Gibson 1977 )
  • 64. Affordances and other clues the affordances of the environment are what it offers the animal, what it provides or furnishes, either for good or ill " (Gibson 1977 )
  • 65. Affordances and other clues Real affordances
  • 66. Affordances and other clues Real affordances Perceived affordances
  • 67. Affordances and other clues Real affordances Perceived affordances Hidden affordances
  • 68. Affordances and other clues Real affordances Perceived affordances Hidden affordances Empty (false) affordances
  • 69. Affordances and other clues Real affordances Perceived affordances Hidden affordances Empty (false) affordances Correct rejections
  • 70. Affordances and other clues Real affordances Perceived affordances Hidden affordances Empty (false) affordances Correct rejections Conventions
  • 71. Affordances and other clues Real affordances Perceived affordances Hidden affordances Empty (false) affordances Correct rejections Conventions Canonical affordances
  • 72. Affordances and other clues Real affordances Perceived affordances Hidden affordances Empty (false) affordances Correct rejections Conventions Canonical affordances Sequential affordances
  • 76. The How 岳看 "For designers it most probably is important to understand artefacts in terms of functions: in design methodology, for instance, designing is often defined as a process that starts with specific required functions and that ends with a physical description of an artefact that can perform these functions. (Vermaas and Houkes 2006:32-33)
  • 77. The How 岳看 "For designers it most probably is important to understand artefacts in terms of functions: in design methodology, for instance, designing is often defined as a process that starts with specific required functions and that ends with a physical description of an artefact that can perform these functions. (Vermaas and Houkes 2006:32-33)
  • 78. The How 岳看 "For designers it most probably is important to understand artefacts in terms of functions: in design methodology, for instance, designing is often defined as a process that starts with specific required functions and that ends with a physical description of an artefact that can perform these functions. (Vermaas and Houkes 2006:32-33)
  • 79. The How 岳看 "But for users this understanding may be unnecessarily full. Users may take artefacts simply as means for attaining desired ends, without making the additional step of expressing this as that artefact have functions." (Vermaas and Houkes 2006:33)
  • 80. The How 岳看 "But for users this understanding may be unnecessarily full. Users may take artefacts simply as means for attaining desired ends, without making the additional step of expressing this as that artefact have functions." (Vermaas and Houkes 2006:33)
  • 81. The How 岳看 Interaction with an object or an application:
  • 82. The How 岳看 Interaction with an object or an application: What is our goal in a given situation?
  • 83. The How 岳看 Interaction with an object or an application: What is our goal in a given situation? Are we confident that we get the clues right?

Editor's Notes

  • #3: Not how to do technical writing No practical usability tipsNot entirely up to date
  • #32: Eco Funktionen og tegnet 1998/La struttura assente 1968
  • #33: Engholm og Michelsen 1999 Designmaskinen / Engholm og Riis 2001Vitruvius - De architectura - firmitas, utilitas, venustas solid, useful, beautiful. Vitruvian virtues or the Vitruvian Triad
  • #34: Engholm og Michelsen 1999 Designmaskinen / Engholm og Riis 2001Vitruvius - De architectura - firmitas, utilitas, venustas solid, useful, beautiful. Vitruvian virtues or the Vitruvian Triad
  • #36: WHAT IS IT FOR?opgave eller aktivitet som nogen eller noget har til form奪l at udf淡re, ofte som led i en st淡rre sammenh脱ng
  • #37: HOW DOES IT WORK?m奪de som noget virker eller arbejder p奪, fx teknisk eller kemisk
  • #38: WHAT CAN IT HELP ME DO?mulighed for at udf淡re en bestemt handling under brug af en maskine, afvikling af et edb-program el.lign.
  • #42: You copy - Xerox
  • #43: Open to see if paper is jammed. Change toner
  • #44: Open to see if paper is jammed. Change toner
  • #45: Knowledge of principles behind beyond simple repair.
  • #46: Standard= designers function (socially accepted, Hansson 2006)Stol til at
  • #47: The object that doesnt do what it is supposed to
  • #48: A useful thing you cannot use because something else is lacking
  • #49: Pensioner time precision, skills, needs of the user
  • #51: History of the design originally intended purpose, development process, production, previous use
  • #52: Intention of the one thinking of function why you think about an objects function. User, buying a gift, etc.Viewpoint.
  • #53: The artifact, surroundings, and interactingagent (typically the user)
  • #54: Actions in the relevant situation.
  • #66: We get clues about real, actual possible interactions.
  • #67: What we see as possibilities of interaction but what are really signals like icons on a desktop
  • #68: What we see as possibilities of interaction but what are really signals like icons on a desktop. You get feedback though not a directly physical one, like you would If you tried to walk into a chair.
  • #69: What we see as possibilities of interaction but what are really signals like icons on a desktop. You get feedback though not a directly physical one, like you would If you tried to walk into a chair.
  • #70: What we see as possibilities of interaction but what are really signals like icons on a desktop. You get feedback though not a directly physical one, like you would If you tried to walk into a chair.
  • #71: What we see as possibilities of interaction but what are really signals like icons on a desktop. You get feedback though not a directly physical one, like you would If you tried to walk into a chair.
  • #72: What we see as possibilities of interaction but what are really signals like icons on a desktop. You get feedback though not a directly physical one, like you would If you tried to walk into a chair.
  • #73: Keyhole is easy to recognize but the fact that the key has to be turned is harder and requires knowledge on convention.
  • #74: Keyhole is easy to recognize but the fact that the key has to be turned is harder and requires knowledge on convention.
  • #75: Keyhole is easy to recognize but the fact that the key has to be turned is harder and requires knowledge on convention.
  • #76: Keyhole is easy to recognize but the fact that the key has to be turned is harder and requires knowledge on convention.