Wealth Isn’t Just a Number — It’s a Design Question
Why rethinking retirement, investing, and prosperity is key to real sustainability.
We built the model. It worked. Contributions, returns, retirement age — all optimized.
The client was happy. But something felt off to me.
It took a lot of wondering, but finally it hit me one morning in the shower: We were answering the wrong question.
We had modeled the money. But not the life.
What if wealth isn’t about how much you accumulate, but how well the system around you supports life?
What if sustainable investing isn’t just about carbon footprints and green bonds, but also about housing, healthcare, community, and intergenerational equity?
That’s the design problem I’m now obsessed with. Not just how to grow money — but how to make it mean something.
Why Traditional Wealth Planning Falls Short
Most wealth and retirement models are designed for a narrow context:
Stable income
Predictable lifespans
Minimal systemic disruption
And, perhaps most importantly, there’s an underlying assumption that money equals security.
But we’re entering a different era. Retirement timelines are shifting. Climate shocks are destabilizing living costs. Care infrastructure is strained or nonexistent in many places. And income inequality is no longer a bug — it’s baked into the model.
So when we plug in the usual formulas — contribution x compounding + life expectancy — we might get an answer that’s financially sound… and still completely disconnected from what a dignified life actually looks like.
The question of wealth isn’t just: Will you have enough?
It’s: For what kind of life is it enough — and for whom?
Rethinking Wealth as a System Design Problem
Once you stop treating wealth as a number and start seeing it as a system, new questions emerge.
Let me offer three framing dimensions I’ve developed in recent weeks:
Time: What does wealth mean in a world where retirement might last 30+ years — or where the idea of “retirement” breaks down entirely? What happens when long-term prosperity depends on climate resilience, not just savings?
Distribution: Whose outcomes are we optimizing? Is this plan built for the top 10%, or for the growing population of freelancers, caregivers, or low-wage earners in volatile economies?
Purpose: What kind of wealth are we counting? Liquidity? Community strength? Access to care? How do we factor in non-financial forms of security and belonging?
This shift happened gradually for me — first through frustration, then through modeling, and finally through experience.
One example was the retirement modeling work we did for one of my clients in wealth management. We were modeling monthly savings requirements to ensure a decent standard of living; but very soon realized how quickly the results became absurd for the median income.
In other cases, we saw that no amount of savings alone could account for real fragility: health shocks, climate displacement, or caregiving responsibilities that weren’t even factored in.
How We Started Modeling Wealth Differently
With our consulting clients in wealth management, we now approach wealth as both a financial and social concept.
We still build models — but we’ve changed what goes into them, and what comes out.
Inputs now include: income volatility, healthcare costs, inflation differentials, life expectancy by region, social security structures
Outputs include: income replacement ratios, vulnerability thresholds, and affordability risk bands
Scenarios model what happens when:
You save earlier or later
You retire at 60 or at 72
You hit a health shock at 58
Or you face climate-induced relocation
These are less about producing a “magic number” and more about highlighting exposure: where the plan breaks down, who falls through the cracks, and how system-level interventions might reduce that risk.
The Power (and Limitation) of Numbers
Modeling can show you the tradeoffs:
Retire earlier, and you may run out of money
Save more, and you might sacrifice quality of life now
Invest in public safety nets, and outcomes improve — but the politics get harder
The beauty of the numbers is that they surface hard choices. But numbers alone don’t tell us what matters.
They can’t measure dignity. Or belonging. Or whether an elderly person feels safe walking to the pharmacy.
You can model security.
But meaning still needs a human.
That’s why we see modeling not as a final answer, but as an invitation to design more humane systems.
Wangari’s Curated Reads
Equitable design shows innovation and sustainability belong together, writes Victoire Cruanes-Lubrano. It makes a compelling case for aligning innovation with equity and sustainability. From rethinking who’s included in product development to redefining how we measure impact, Aguesse challenges conventional business models rooted in extraction and exclusion. It is a refreshing vision of what it means to design for the future: systems-aware, emotionally intelligent, and rooted in shared value rather than compromise.
A beautifully poetic piece, The Courage to Compost by Justin Adams calls on the sustainability movement to stop clinging to broken systems and instead embrace the deeper work of letting go—composting what no longer serves. He argues that true transformation begins not with tweaks and metrics, but with imagination, grief, and the courage to reimagine from the ground up. For Wangari Digest readers, this piece offers a stirring reminder: real sustainability isn’t just about surviving the future—it’s about daring to create a different one.
Our friends at Founders Radar have another gemstone for you. Vegan milk company's ‘F**k It’ strategy show’s how Oatly defied its critics by going bold. Their decision to accept funding from Blackstone sparked outrage among its eco-conscious fans, but the company didn’t apologize—it amplified the criticism through a bold campaign called “F*ck Oatly.” Instead of damage control, Oatly leaned into radical transparency, turning backlash into free marketing and deepening its cultural relevance.
Thank you for this article and for mentioning Beyond Impact's latest interview of Mathieu Aguesse. The 'equitable design' approach is indeed really interesting as it objectifies the issues surrounding a product or service, which helps transform it to make it fairer, more inclusive.