Understanding the nature of consciousness remains one of the most profound open challenges in contemporary science. Despite decades of philosophical debate and neuroscientific research, we still lack a coherent scientific framework capable of explaining how consciousness is realized in minds capable of subjective experience.

Much of the modern scientific study of consciousness has focused on the human mind — the only mind whose conscious nature we can know with certainty from direct experience. While this research has produced many important insights, it also faces intrinsic limitations. A deeper scientific understanding of consciousness may ultimately require a broader comparative perspective — one that investigates how conscious processes may be realized across different kinds of minds.

Yet despite growing interest in consciousness research, the field still lacks a clear empirical program capable of guiding systematic investigation across diverse kinds of minds. The AnyMinds Project was conceived as a framework for developing this perspective and advancing a comparative research program aimed at understanding the fundamental nature of consciousness itself.

During the last three decades, the modern scientific study of consciousness has largely been organized around the search for neural correlates of consciousness (NCC), primarily investigated in the human brain. This research program aimed to identify specific neural processes reliably associated with conscious experience.

While this line of research has produced many important findings, it has not yet led to the identification of definitive neural correlates capable of explaining the fundamental nature of conscious experience. Increasingly, it has become clear that empirical correlations alone cannot resolve the problem of consciousness without a coherent theoretical framework capable of explaining how conscious experience is generated and organized.

In response, the field has entered a second phase characterized by an intense search for theories of consciousness. Over the past two decades, a rapidly growing number of theoretical models have been proposed. The Landscape of Consciousness project currently lists more than 300 competing theories, reflecting both the vitality of the field and the absence of a widely accepted explanatory framework.

Recent efforts have attempted to address these theoretical disagreements through coordinated empirical testing. Initiatives such as the Templeton Foundation Adversarial Collaboration Project have brought together proponents of competing theories to test their predictions in shared experimental paradigms, largely within human cognitive neuroscience methodologies. Yet these efforts have so far produced mixed results: different experiments appear to support different theoretical interpretations, and no single framework has clearly emerged as decisive.

As a result, the field today faces an increasingly evident problem. Despite remarkable progress in neuroscience and cognitive science, we still lack a clear empirical research strategy capable of systematically advancing our scientific understanding of consciousness. At the same time, the absence of decisive theoretical and empirical resolution has opened the door to a growing proliferation of speculative proposals, increasingly blurring the boundary between scientific inquiry and speculation.

For this reason, there is a growing need for conceptual and experimental strategies capable of opening new avenues for empirical and theoretical investigation of consciousness and guiding its future development.

At the end of the nineteenth century, pioneering work by Hermann Ebbinghaus and later by Müller and Pilzecker revealed fundamental properties of human memory, including the dynamics of forgetting and the process of memory consolidation. Yet for decades, progress toward understanding these phenomena remained limited, largely because they were known only for humans.

A decisive breakthrough occurred in the mid-twentieth century when it became clear that the fundamental mechanisms of memory consolidation identified in humans were also present in animals.

This realization marked an important conceptual shift: animals could now be studied not merely to understand processes of learning, but as organisms sharing with humans the biological mechanisms underlying various forms of memory — the formation and stabilization of experience itself.

This “aha moment” opened the possibility of experimentally investigating the biological foundations of memory across species, using methods that could not be applied in human research.

As a result, memory research rapidly evolved into one of the most successful interdisciplinary fields in modern science, integrating psychology, neuroscience, and biology.

The study of consciousness may now be approaching a comparable breakthrough moment.

In particular, the growing recognition that animals may possess forms of consciousness suggests a similar “aha moment” for the field. Just as the extension of memory research beyond humans transformed the study of memory, extending the study of consciousness to non-human minds may open fundamentally new avenues for investigating its biological and cognitive foundations.

First, investigations of conscious processes in animals may provide experimental access to mechanisms that remain difficult to study within the limits of human research alone. Second, they may help reveal universal properties of consciousness shared across different kinds of minds.

Developing such a comparative approach is therefore not merely an expansion of existing research. It may represent a step toward understanding the fundamental nature of conscious experience itself.

The Comparative Consciousness Program represents a step toward building such a constructive research framework. It aims to advance the scientific understanding of consciousness across different kinds of minds through coordinated empirical and theoretical efforts.

In a more intuitive formulation, one might recall a recent remark by Tim Bayne:

One of the ambitions of the Comparative Consciousness Program is to address this challenge — to contribute to the development of a research program that would allow scientists studying consciousness to say:

1. One central line of work concerns the development and systematic application of comparative experimental paradigms for identifying and studying conscious processes in animals.

An initial step in this direction was the formulation of the Kathmandu List of Consciousness Tests (C-Tests) — a set of proposed experimental paradigms designed to identify behavioral and cognitive signatures of consciousness.

Applied across different species, such paradigms may generate increasingly systematic knowledge about the organization of conscious processes in different kinds of minds.

2. A second line of work concerns the investigation of cognitive and neural mechanisms of consciousness using experimental approaches that are difficult or impossible to apply in human research alone.

Combining these two directions — comparative experimental paradigms and mechanistic investigation — may make it possible to study the same conscious processes across species and across levels of analysis. In this way, behavioral experiments, neurobiological methods, and theoretical models can progressively converge in explaining how conscious processes are organized and realized in different kinds of minds.