What Has Not Been Solved

A serious treatment of this design space requires naming honestly what has not been figured out, because the temptation in this kind of writing is to gesture at solutions and let the reader’s imagination complete them. That move is exactly what produces the failures the next decade will be working to clean up.

The first unsolved problem is the contemplative traditions’ critique, which is the deepest objection to any coherence-measurement architecture and the one that any serious project has to engage rather than dismiss. Two and a half millennia of contemplative practice have produced a consistent observation: the moment a person sits down to be present in order to obtain something, presence has already left the room. The reaching for the reward disrupts the state the reward was meant to recognize. If physiological coherence becomes economically valuable, every participant will eventually face the question of whether they are regulating because regulation is its own reward or because regulation produces external return. This is not a hypothetical problem. It is the central trap that contemplative traditions developed elaborate technologies specifically to navigate. Any project attempting to make physiological coherence economically legible has to take this critique seriously enough to design around it, and the honest answer is that no one yet knows whether such design is possible. The intuition that physiology is harder to fake than behavior may be true while the deeper problem—that incentivizing inner states warps them—remains unresolved.

The second unsolved problem is the surveillance problem in its strict form. Even with sovereign identity, federated computation, and zero-knowledge architectures, the existence of a system that connects physiological state to economic value creates infrastructure that future actors—not the founders, but those who acquire, modify, or coerce the system later—could repurpose. Every privacy-protective architecture in the history of computing has eventually had its protections weakened under pressure from law enforcement, intelligence services, advertisers, or scale-driven product decisions. A coordination system handling physiological signal cannot assume that the threat model existing at founding will be the threat model existing at scale. The honest answer is that no one yet knows how to build cryptographic and governance architectures resilient enough to hold this kind of data across the long-term pressures it would face. The design space exists. The design has not been proven.

The third unsolved problem is the question of what physiological diversity the system would permit. Human beings vary enormously in baseline autonomic regulation, in response to stress, in interoceptive capacity, in neurodivergence, in the physiological signatures of legitimate cultural and individual difference. A naïvely designed coherence metric would reward the narrow band of physiological profile that maps to a particular cultural norm of regulated presence, and would systematically disadvantage anyone whose body operates differently—people with trauma histories, people with chronic illness, neurodivergent participants, people whose cultures express attunement through patterns the metric does not recognize. Building a system that does not become a new instrument of physiological normativity requires design choices that have not been worked out, and may not be solvable through technology alone.

The fourth unsolved problem is the question of what happens when the system scales beyond the conditions of trust that make it work at small scale. Almost every coordination innovation in human history has worked beautifully in its founding community and degraded as it grew. Whether physiological coherence currency can scale without producing the dynamics it was built to refuse is not knowable in advance. It is the kind of question that can only be answered through cautious, iterative practice, with explicit willingness to shut down or radically redesign the system if it begins producing the failure modes its founders intended to prevent.

These are not minor wrinkles. They are foundational design questions. A project that proceeds without engaging them seriously will reproduce, in subtler form, the architectures it claims to refuse.