Making Sustainability Simple: Why Sustainability Is a Design Problem
Is sustainability a question of design or a question of morality? If you work anywhere near sustainability, this question has probably crossed your mind more than once. Opinions tend to split quickly. One side argues that the real problem is human behaviour: short-term thinking, the pursuit of fast profit, convenience at any cost. The other side points to systems – how products are made, sold, used, and disposed of. Our view is clear: sustainability is fundamentally a design problem. Not because people are perfect, but because design decides what becomes normal.
When unsustainable behaviour is everywhere, it’s not because millions of people independently chose to act irresponsibly. It’s because the systems around them were designed to reward exactly that behaviour. Design determines what is easy, cheap, profitable, and scalable. Morality only enters the conversation once the system has already failed. According to the Circularity Gap Report, the global economy is only about 7.2% circular, meaning more than 90% of material flows remain linear and wasteful. This is not because people love waste. It is because the system is built that way.
Blaming individuals in this context is tempting, but ineffective. Studies consistently show that even highly motivated consumers struggle to act sustainably when the system makes it difficult. For example, a 2023 Eurobarometer survey found that while around 73% of Europeans consider a product’s environmental impact important, and over 80% agree that buying eco-friendly products makes a difference, only about 38% had actually purchased products with an EU ecolabel – suggesting that strong concern does not automatically translate into sustainable buying behaviour. When sustainable options are more expensive, harder to access, or require constant effort, they remain niche.
Design removes that friction – or amplifies it. Consider how dramatically behaviour changes when the system changes.
When energy-efficient appliances are the default on the market, energy consumption falls. When cities redesign infrastructure to prioritise public transport and cycling, emissions drop. Copenhagen did not become one of the world’s most bike-friendly cities by asking citizens to be greener. It redesigned streets, traffic rules, and urban priorities. According to Copenhagen City Data, today over 60% of work and school trips in the city are made by bike.
This is what it means to treat sustainability as a design problem. It is about shaping systems so that sustainable outcomes emerge naturally, without constant moral negotiation. Product design plays a critical role here. A product is never just an object. It is part of a larger system that includes sourcing, manufacturing, logistics, user behaviour, and end-of-life. A “holistic product” acknowledges this entire lifecycle from the start. It does not rely on users to make perfect choices, or on downstream fixes like recycling campaigns. It reduces harm by default.
Take durability. Designing products to last longer is one of the most effective sustainability strategies available. The European Environment Agency estimates that extending the lifespan of products such as clothing, electronics, and furniture by just one year could significantly reduce their environmental footprint. Yet many products are still intentionally designed for obsolescence, not because it is sustainable or even efficient in the long term, but because existing business models reward frequent replacement. According to Ellen MacArthur Foundation, the fashion industry exemplifies this: clothing output has roughly doubled in the past 15 years while utilisation – the amount each item is worn – has fallen by about 40%.
This is where design and profitability intersect. Systems optimised only for short-term financial metrics tend to externalise costs – environmental damage, resource depletion, regulatory risk – until those costs return in less predictable and more expensive ways. The World Economic Forum consistently ranks environmental risks among the top global risks in terms of likelihood and impact. Designing sustainable systems is increasingly not an ethical add-on, but a risk management strategy.
The most effective sustainability solutions are often invisible to the end user. Nobody praises a well-designed sewage system, yet public health depends on it. In the same way, the future of sustainability lies less in asking people to “do better” and more in designing systems where doing better is the easiest, most obvious option. If sustainability depended purely on morality, it would never scale. Morality is personal, inconsistent, and context-dependent. Design, on the other hand, scales effortlessly. Once a system is set up, it influences millions of decisions every day without asking for attention or effort.
Making sustainability simple does not mean lowering ambition. It means shifting focus: from fixing symptoms to redesigning systems, from judging behaviour to shaping environments. When systems are designed well, sustainability stops being a struggle and becomes the default.