
Introduction to Design Thinking
A human-centred, iterative way to turn a fuzzy problem into a fitted solution.
Design thinking borrows the working methods of designers and applies them to problems of many kinds. Its commitments are constant: start from the real needs of the people who will use the outcome — for interiors, the occupants — learn by making and testing rough versions, and reason toward what could be. Taught honestly as a useful but contested lens, not gospel.
Learning objectives
By the end of this lesson, you will be able to — mapped to the course outcomes for Design Thinking:
Explain what design thinking is and the desirability-feasibility-viability balance.
Describe design thinking's layered history without treating it as a single invention.
Distinguish divergent from convergent, and creative from critical, thinking.
Discuss design thinking honestly as a useful but contested lens.
What design thinking is
A human-centred, iterative, solution-focused approach — balancing what is desirable, feasible and viable — with a layered history, not a single invention.[1, 2]
Human-centred and iterative
Design thinking is a human-centred, iterative, solution-focused approach to problem-solving. Human-centred: start from the real needs, behaviours and context of the people who will use the outcome — for interiors, the OCCUPANTS — not from the designer's taste or the client's assumptions. Iterative: learn by making and testing rough versions, then loop back — not by planning everything up front.[1, 2]
The thinking beneath it
The fundamental rhythm — diverge to generate, converge to decide — and the difference between creative and critical thinking.[3]
The fundamental rhythm
Design thinking alternates two modes, never both at once. DIVERGE — open up, generate many options (Empathize, Ideate). CONVERGE — narrow down, select and refine (Define, Test/select). Knowing which mode you are in is the core discipline: generating and judging at the same time kills the wild ideas that lead to breakthroughs.[3]
At a glance
| Aspect | Divergent / creative | Convergent / critical |
|---|---|---|
| Purpose | Divergent: generate options | Convergent: choose / decide |
| Thinking type | Creative, generative | Critical, evaluative |
| Mindset | Defer judgment, 'yes-and' | Apply judgment, 'which is best?' |
| Stages | Empathize, Ideate | Define, Test / select |
| Origin | Myth: IDEO invented it | Reality: older roots — Simon 1969, wicked problems 1973 |
Key terms
Starting design from the real needs and behaviour of the people who will use it.
Learning by making and testing rough versions, then looping back.
Inference toward the best possibility — the logic of 'what could be' (Martin).
The three overlapping lenses of a good solution (IDEO).
Generating many options vs narrowing to a choice.
An ill-defined, interdependent problem with no single right answer (Rittel & Webber, 1973).
Studio task
Pick a small everyday frustration in a space you know. Write one sentence each on why solving it is desirable (to whom), feasible, and viable. Then list five ideas without judging them (divergent), and only afterwards circle the two you would take forward (convergent) — noticing the switch in your own thinking.
Self-assessment
1. Design thinking is best described as —
2. Creative (divergent) thinking is to critical (convergent) thinking as —
3. Who wrote The Sciences of the Artificial (1969), an early root of design thinking?
Recap
References & further reading
- [1]Herbert A. Simon, The Sciences of the Artificial, MIT Press, 1969.
- [2]Tim Brown, 'Design Thinking', Harvard Business Review, June 2008; and Change by Design, HarperBusiness, 2009.
- [3]Stanford d.school (Hasso Plattner Institute of Design), An Introduction to Design Thinking — Process Guide.
- [4]Roger Martin, The Design of Business, Harvard Business Press, 2009 (abductive reasoning, the knowledge funnel).
- [5]Horst Rittel & Melvin Webber, 'Dilemmas in a General Theory of Planning', Policy Sciences, 1973 ('wicked problems').
Further reading
- Herbert A. Simon — The Sciences of the Artificial.
- Tim Brown — Change by Design.
- Roger Martin — The Design of Business.
Sources gathered and fact-checked June 2026. Published values vary by source, sample and method — treat as indicative and confirm against the cited standard before structural use.
The author
Amogh N P
Architect, interior designer, and creative polymath. Studio Matrx began in his notebooks — his vision of design made honest, useful, and open to everyone. Its Academy is written and taught in his memory, and free, forever.
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