{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,7,6]],"date-time":"2026-07-06T13:20:01Z","timestamp":1783344001233,"version":"3.54.6"},"reference-count":57,"publisher":"Frontiers Media SA","license":[{"start":{"date-parts":[[2026,7,3]],"date-time":"2026-07-03T00:00:00Z","timestamp":1783036800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"content-domain":{"domain":["frontiersin.org"],"crossmark-restriction":true},"short-container-title":["Front. Psychol."],"abstract":"<jats:p>Space and time are irreducible dimensions of nature\u2014measurable but not derivable from anything more fundamental. Life and experience are here proposed as similarly irreducible dimensions. Together\u2014sometimes referred to as lifeexperience to mark their inseparability\u2014they constitute the dimensional ground from which emerges the Force of Experience\u2014proposed as a candidate fifth fundamental force requiring further physical specification\u2014whose causal reality is evidenced by the entirety of human civilization and all its products, for good and ill. Physics has failed to explain consciousness and life because it treats them as phenomena to be derived from lower-level processes, rather than recognizing them as foundational dimensions in their own right. Correcting this framing recasts both hard problems at once\u2014not as derivation problems to be solved but as recognition problems to be addressed. Four converging arguments support these claims. First, the dimensional argument: Life and experience meet the same criteria for foundational status as space and time\u2014they are causally real, irreducible, and known through inhabitation rather than external observation alone. Second, the AI argument: Information processing of extraordinary sophistication does not generate experience, providing an existence proof that something beyond computation is required. Third, the Now Problem: The present moment\u2014the most certain datum of experience\u2014has no place in the formalism of physics, a structural absence pointing to a dimension physics does not contain. Fourth, 33\u202fyears of clinical evidence: A single brain contains two selves independently accessing the experiential dimension, with therapeutic consequences for anxiety, depression, and opioid use disorder sufficient to earn FDA Breakthrough Device Designation. The Subjective Field is hypothesized as the physical mechanism linking the life dimension to the experiential dimension\u2014transforming coherent living brain information into feelable information that can be received and actualized by the self. The field is physical and potentially discoverable; it takes brain information across a dimensional boundary. No physical instrument can yet follow this process. The hard problems are not solved by finding a better mechanism. They are reframed by recognizing that dimensions do not require mechanisms for their existence\u2014they require only recognition of their irreducibility. The hard problems are addressed not by mechanism but by recognition\u2014and from that recognition the hypothesized Subjective Field and Force of Experience, and the reported clinical evidence of two selves, take their proper place: not as derivations of consciousness from physics, but as features of a reality in which experience is foundational.<\/jats:p>","DOI":"10.3389\/fpsyg.2026.1845620","type":"journal-article","created":{"date-parts":[[2026,7,6]],"date-time":"2026-07-06T12:52:47Z","timestamp":1783342367000},"update-policy":"https:\/\/doi.org\/10.3389\/crossmark-policy","source":"Crossref","is-referenced-by-count":0,"title":["Life and experience as irreducible dimensions of nature"],"prefix":"10.3389","volume":"17","author":[{"given":"Fredric","family":"Schiffer","sequence":"first","affiliation":[{"name":"Developmental Biopsychiatry Research Program, McLean Hospital","place":["Belmont, MA, United States"]},{"name":"Department of Psychiatry, Harvard Medical School","place":["Boston, MA, United States"]},{"name":"MindLight, LLC","place":["Newton Highlands, MA, United States"]},{"name":"Private Practitioner","place":["Newton Highlands, MA, United States"]}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1965","published-online":{"date-parts":[[2026,7,3]]},"reference":[{"key":"ref1","volume-title":"Flatland: A Romance of Many Dimensions","author":"Abbott","year":"1884"},{"key":"ref2","volume-title":"Confessions","author":"Augustine","year":"1991"},{"key":"ref3","volume-title":"A Cognitive Theory of Consciousness","author":"Baars","year":"1988"},{"key":"ref4","doi-asserted-by":"publisher","first-page":"20170096","DOI":"10.1098\/rsif.2017.0096","article-title":"Predicting green: really radical (plant) predictive processing","volume":"14","author":"Calvo","year":"2017","journal-title":"J. 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