What the Body Knows Before the Mind Does: Embodied Cognition

Tacit knowledge, expert intuition, and the limits of explanation

Michael Polanyi opened a durable line of inquiry in 1966 with a single, deceptively simple observation: we know more than we can tell. A face is recognisable among a thousand others, instantly, though the person recognising it could not write down the precise combination of features that made it identifiable. A skilled cyclist keeps their balance through a continuous set of micro-adjustments they could not consciously describe, let alone teach through verbal instruction alone. Polanyi called this tacit knowledge and argued it is not a lesser, fuzzier cousin of explicit knowledge, waiting to be upgraded into words. It is a different mode of knowing entirely, one that often underlies and enables the explicit knowledge built on top of it.

Relying on body knowledge, as well as the rational

Noticing before knowing

There is a distinction inside Polanyi's broader concept between tacit knowledge already possessed and put to use and something that happens earlier: the capacity to perceive that something is significant at all, before you have any articulated knowledge to apply to it. A novice and an expert can look at the same scene and see genuinely different things, not because the expert has more facts loaded into memory (though they usually do), but because accumulated experience has changed what registers as noteworthy in the first place. The expert's attention snags on the detail that matters before conscious reasoning has been engaged to evaluate it.

Gary Klein's research on naturalistic decision-making gives this a concrete, well-documented case. Studying experienced firefighters, Klein found that veteran commanders frequently pulled their crews out of a building moments before a catastrophic collapse, unable at the time to say exactly why. Later analysis showed subtle cues, an unusual quiet, heat patterns, a floor's particular give, that the commander's trained perception had registered and acted on before conscious reasoning had caught up enough to name the danger explicitly. The knowledge was there. The words came later, if they came at all.

Why this can't simply be taught by description

This has an uncomfortable implication for how we usually think about training and expertise. If this kind of perceptual attunement develops through sustained exposure to real consequence, situations where missing the signal actually costs something, rather than through description, instruction, or secondhand example, then a great deal of what gets labeled professional development, classroom instruction, onboarding manuals, theoretical coursework, is building a different and more limited kind of knowledge: knowing about, rather than the noticing itself. You can teach a new firefighter every documented collapse pattern in a textbook. You cannot transfer, through the textbook alone, the trained perception that let a veteran commander feel the room was wrong before any pattern had been consciously matched.

This is not an argument against instruction. Explicit knowledge matters, and a novice without any theoretical grounding is worse off than one with it. It is an argument for humility about what instruction alone can accomplish, and for taking seriously that some of the most consequential knowing a person develops over a lifetime may never fully translate into a lesson that can simply be handed to someone else.

Where this connects to embodied cognition

This sits naturally alongside the argument made earlier in this series about embodied cognition, that the body is not a supplement to reasoning but part of the architecture that makes judgment possible at all. Tacit perception is that same claim extended into skill and expertise specifically. The tightness in the firefighter's chest, or the sense that a room is subtly wrong, is not separate from their professional judgment. It is an early, faster form of the judgment itself, arriving before the slower, conscious, nameable version of the same conclusion has finished assembling.

Trusting what can't yet be explained

There is a real discipline in learning to take this kind of signal seriously without either dismissing it as unfounded, or treating it as infallible, simply because it feels certain. The firefighter's instinct saved lives specifically because it had been built through years of real, high-stakes exposure, not because gut feeling is reliably superior to analysis in general. The practical lesson is not 'trust your gut over your reasoning'. It is closer to: take seriously the possibility that your body has registered something your conscious mind has not yet caught up to naming, and treat that as a reason to look closer, rather than either obeying it blindly or waving it away because it arrived before the argument did.

Kathy Postelle Rixon is Chair of The Philosophical Society: Oxford, a researcher of consciousness, and a seventh-level shaman. You can contact her at kathy@magicinharmony.com or visit her website at www.magicinharmony.com.