Design of everyday things (Principals of interaction (Affordances (The…
Design of everyday things
Characteristics of good design
what actions are possible
Where and how to perform them
How a product supposed to be used
what do different controls and settings mean
All artificial things are designed
Not all designed things involve physical structure
Various forms of design
enhance people's understanding of what can be done, what is happening and what just occurred.
designing products with a focus on quality and enjoyment
creating and developing concepts to optimize the function, value and appearance of products.
When designed badly
force us to behave the way the product wishes rather than as we wish
unusable leading to frustration
Machines are designed by people and by human standards they are pretty limited
follow simple and rigid rules of behavior
Machines require us to be precise and accurate
They have no leeway or common sense
The rules followed by a machine are known only by the machine and its designers
reasons for deficiencies for human-machine interaction
1) limitations of today's technology
2) self-imposed restrictions by the designers
3) complete lack of understanding of the designs principles necessary for effective human-machine interaction
an approach that puts human's needs, capabilities, and behaviors first
Good design has the understanding of psychology and technology
good design has good communication especially from machine to person
communication is especially important when things go wrong
understanding humans' needs comes from observations
Principals of interaction
The relationship between a physical object and a person. relationship between the properties of an object and the capabilities of an agent.
Affordances determine what actions are possible. Signifiers communicate where the action should take place.
The relationship between the elements of two sets of things. Natural mapping leads to immediate understanding.
Some way of letting users know that the system is working. Communicating the results of an action.