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Interaction Failures

Last updated Oct 3, 2021 Edit Source

Interacting with interfaces is complex, and often poorly designed. Most times,

  1. The tasks are implicit and complex: the machine doesn’t “know” the user’s end goal
  2. Interaction is unpredictable and complex: coordination between human and machine is complicated, usage can be unexpected and evolved, users can change their minds

# Interfaces

  1. Functionality Problem: what are the functions this object can perform? Will it do what I want?
  2. Visibility Problem: what mode is this object in? What sequence of controls do I use to get what I want?
  3. Negative Transfer: what would happen if I do what I usually do?

# Designers

Can fail to

  1. understand the range of users and their limitations
  2. understand contexts of use
  3. communicate what it does, how it works/worked, etc.
  4. start with basic usability needs, and might try to make it exciting or beautiful first

# Market Pressures

User’s don’t always make good purchase choices

  1. Adding new functionality is relatively easy and cheap whereas adding effective controls/feedback is expensive and costly for time and space
  2. Designer time is expensive
  3. Some consumers value cost or looks over usability