03 · Longevity

Super Normal Index

The takeaway

The quietest objects are the ones people keep.

Median years in daily use

9.4 yrs

Calm, low-ornament forms stay in the home roughly twice as long as trend-led ones.

Super Normal forms

Trend-led forms

3.1

Statement

4.6

Decorative

6.2

Functional

7.8

Quiet

9.4

Super Normal

Source: Household Object Lifecycle Study, 2024 · n = 2,140 homes

Atelier Mukou

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This is the Fukasawa Without Thought design system, applied by Curio Design — a design-style library for AI agents. Full Fukasawa Without Thought guide → designbycurio.com/learn/naoto-fukasawa-without-thought