Skip to content

Conceptual Quote by Donald A. Norman

“What makes something simple or complex? It's not the number of dials or controls or how many features it has: It is whether the person using the device has a good conceptual model of how it operates.” quote by Donald A. Norman
Download Open image
“What makes something simple or complex? It's not the number of dials or controls or how many features it has: It is whether the person using the device has a good conceptual model of how it operates.”

Donald A. Norman

About This Quote

Source Book: The Design of Everyday Things, 1988

Simplicity depends on the user’s mental model, not feature count.

In simple terms: Design is simple when users understand it.

Key Takeaway

Focus on clear mental models.

Themes

design usability complexity human factors

Mood

analytical practical

Type

educational inspirational

When to use this quote

  • software interfaces
  • consumer appliances
  • educational tools
  • vehicle controls

Key Concepts

cognitive load affordance modeling

Questions to Reflect On

  • Do you design for novices or experts?
  • How can you test mental models early?
A Different Perspective

Complexity can’t be eliminated, only managed.

2.1 out of 5 (10 ratings)

More by Donald A. Norman

Explore all 97 Donald A. Norman quotes

More Conceptual quotes

Browse all 118 Conceptual quotes