Designing for the Next Six Billion: Why the World's Hardest Problems Need a Different Design Tradition

For two decades, the global conversation about human-centred design has been dominated by a handful of frameworks born in Silicon Valley and refined in the studios of the American West Coast. They are elegant, well-documented, and genuinely useful. They were also built to solve a particular kind of problem: one where budgets exist, institutions function predictably, users are formally documented, and infrastructure can be assumed.

Most of the world does not look like that.

Most of the world looks like a district hospital serving three times its intended population. A street vendor economy that runs on trust rather than contracts. A public service that must work for a farmer with a feature phone and a graduate with a flagship smartphone, simultaneously, in twelve languages. This is not the edge case. This is the majority condition of humanity — and it demands a design tradition of its own.

A Lineage Built for Complexity

India has quietly been developing that tradition for over sixty years. When the National Institute of Design was founded in Ahmedabad in 1961, following the recommendations of the India Report by Charles and Ray Eames, its mandate was never to decorate products for affluent consumers. It was to apply design to the problems of a newly independent, resource-scarce nation: agriculture, craft livelihoods, public health, education, transport.

Out of that mandate grew a distinctive intellectual lineage — one that HCD Institute inherits directly through the work of thinkers like the late Prof. M P Ranjan, whose Design Concepts and Concerns pedagogy insisted that design is not a styling exercise but a way of reasoning about complex, layered, deeply contextual systems. Where imported frameworks often begin with the individual user, this tradition begins with the situation: the household, the informal market, the community dynamics, the seasonal cash flow, the institution that half-works.

That difference is not academic. It changes what you notice, what you prototype, and what actually survives contact with reality.

Constraint Is Not a Limitation. It Is a Discipline.

Designers trained in resource-rich contexts often treat constraint as something to be removed — get more budget, more data, more time. Designers trained in the Indian tradition treat constraint as the primary design material. Frugality forces clarity. Informality forces empathy that goes beyond personas on a whiteboard. Complexity forces systems thinking as a survival skill, not a workshop module.

The results speak globally. India's Unified Payments Interface moved a cash-dominated, largely informal economy onto real-time digital payments at a scale no Western market has matched — not by assuming ideal users, but by designing for interoperability, zero-cost transactions, and radically diverse literacy levels. Aadhaar-linked service delivery, low-cost diagnostic devices, mission-mode vaccination logistics, jugaad-refined agricultural tools: these are not exceptions. They are the output of a design culture that expects scarcity and designs through it.

The Repositioning the Field Needs

For too long, design institutions in the Global South have positioned themselves as regional adaptations of Western practice — "design thinking, localised." We believe that framing is exactly backwards.

The frontier problems of this century — climate adaptation, mass urbanisation, healthcare access, financial inclusion, education at population scale — are constraint problems. They will be solved, or not, in exactly the environments the Indian design tradition was built for. The frameworks that assume abundance will need to learn from the frameworks that assume its absence.

HCD Institute's position is therefore simple: we are not an alternative to Western human-centred design. We are a centre of gravity for the design of complexity, constraint, and emerging-market scale — for practitioners, governments, development agencies, and institutions anywhere in the world facing majority-world conditions.

What This Means in Practice

Over the coming months, we will be publishing a series of in-depth case studies examining how human-centred design principles have solved massive, low-resource systemic problems — from India's digital public infrastructure to localised healthcare delivery — written for an international audience of development agencies, multilateral institutions, and NGOs working across Africa, Southeast Asia, and Latin America.

If your organisation designs for the six billion people who live outside resource-rich assumptions, this body of work is being built for you.

Mathew Sebastian

Mathew is a mentor at HCD Institute, where he has led the movement to democratise design thinking in India since 2011. An alumnus of NID Ahmedabad and a Fellow at IIT Hyderabad's Design Innovation Centre, he brings over 18 years of experience across design strategy, education, and public policy.
He has advised governments and institutions including the Government of Kerala, Bihar's Ministry of Industries, the Andaman & Nicobar Administration, and Nordic diplomatic missions — with a curriculum formally adopted by Mahatma Gandhi University.