A loose principle that a user should not need to wait more than 2 seconds for certain types of system response, such as application-switching and application launch time. The choice of 2 seconds is somewhat arbitrary, but a reasonable order of magnitude.
- Glossary Categories > Design Principles > Usability Metrics
- Glossary Categories > Design Principles > User Interaction Principles
- Glossary Categories > Interaction Design > User Interaction Principles
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