World Solve

If access to longevity technologies is unequal, societies may face new divisions over wealth, inheritance, authority, and opportunity. Ethical and fiscal systems must prevent extended life from becoming a mechanism for permanent elite control. The solution must work with limited capital, intermittent services, and local maintenance capacity. The research opportunity is to define measurable success criteria, test the approach in realistic settings, identify failure modes, and create a pathway from prototype to accountable deployment.

Entry systems that require intentional amnesia create barriers for people with strong purpose or cognitive differences. The challenge is designing security that does not depend on temporary memory erasure.

Shelving systems that conceal books until a reader meets algorithmic criteria restrict curiosity and self-directed learning. The challenge is supporting progressive discovery without gatekeeping physical or digital collections.

Access rules that demand deposition of a memory before entry turn recreation into an emotional transaction. The challenge is preserving green-space availability without compulsory self-disclosure.

Spoken dialogue that produces persistent aerial annotations can create distraction, privacy leaks, and unequal access to context. The problem is managing real-time annotation layers so they remain optional and controllable by speakers.

Dispensers that release water only after correct answers create barriers for children, visitors, and people with cognitive differences. The problem is providing free hydration without knowledge tests as gatekeepers.

Entrances that expand or contract according to digital invitation data can exclude people with disabilities or create real-time social filtering. The challenge is keeping physical thresholds inclusive regardless of digital status signals.

Treating quiet as a scarce, metered resource excludes those who cannot afford or schedule loans. The challenge is preserving library silence as a public good rather than a rationed commodity.

The ability to freeze aging in specific organs or features while others continue creates new forms of body modification and potential health imbalance. The problem is ensuring medical safety, informed consent, and equitable access without enabling permanent physical stratification.

Homes that charge more for greater daylight access can deepen housing inequality and incentivise light-blocking in poorer units. The challenge is valuing natural illumination without turning it into a luxury surcharge that harms health equity.

If people live substantially longer, societies will need new models for work, learning, housing, dependency, and end-of-life care. Existing systems are not designed for decades of post-retirement life or multiple phases of dependency. The design must remain functional when standards, trade routes, data access, and diplomatic cooperation are unreliable. The research opportunity is to define measurable success criteria, test the approach in realistic settings, identify failure modes, and create a pathway from prototype to accountable deployment.

Districts that can reverse precipitation direction for aesthetic or prestige reasons create visible environmental hierarchy. The problem is preventing weather directionality from becoming another marker of spatial inequality.

If parks close at night on the grounds that vegetation requires solitude, human access to green space is reduced. The problem is integrating genuine ecological rest requirements with the continuous human need for outdoor refuge and recreation.

public transport systems inaccessible to disabled people remains one of the most urgent challenges of our time. Systems currently in place are inadequate for the scale and complexity of the problem. A successful approach must work where resources are scarcest and demonstrate clear, measurable results. It should identify possible harms, respect local agency, and show how the solution can be maintained and expanded by the communities it is meant to serve.

When an individual’s voice can be licensed for insertion into third-party speech, identity and consent become commercial assets. The challenge is preventing unauthorised or harmful use while still allowing legitimate creative or accessibility applications.

The problem of lack of ramps and basic accessibility features continues to affect hundreds of millions of people and undermines progress on multiple Sustainable Development Goals. Existing responses remain fragmented, under-resourced and poorly adapted to local contexts. A strong solution must operate effectively under severe constraints of skilled personnel, infrastructure, electricity and connectivity. It should define clear measurable outcomes, identify possible unintended harms, and demonstrate how the intervention can be sustained by local institutions long after initial funding ends.

Roadways that shrink in real time based on predicted density can trap pedestrians and restrict access. The problem is managing crowd flow without creating physical bottlenecks that endanger people or exclude those with mobility needs.

Audio that silences during stillness can exclude people with limited mobility or those who need to remain seated. The challenge is providing movement-linked experiences without turning stillness into auditory deprivation.

Lifts that prioritise or restrict floors according to behavioural scores create physical segregation inside buildings. The problem is designing vertical mobility that remains accessible and non-discriminatory regardless of any scoring system in use.

Biological data repositories growing in public or private trees raise questions of ownership, access, and longevity. The problem is ensuring that information rooted in living organisms remains under the control of the original subject and does not become harvestable by third parties.