Every category is a simplification and every simplification excludes something real. This is not a flaw in particular categories. It is the nature of categorisation itself—the act of placing boundaries around a set of characteristics and saying that what falls inside the boundary belongs to the category and what falls outside does not.
The boundary is the category’s usefulness and its limitation simultaneously. It makes the category legible and it makes the category false, because the thing being categorised does not have the boundary. The boundary was placed there by the person who needed the category.
Human beings do not have natural categories. They have continuous variation—in cognitive style, in social orientation, in sensory processing, in the pace and pattern of their development, in the particular configuration of capacities and challenges that constitutes their specific relationship to the world. The variation is real. The categories that are placed over the variation are tools, not descriptions. They are maps of a territory that is more complex than any map can render, and the map, as the observation goes, is not the territory.
The neurodivergent category is a map. Its value depends on what you need the map for.
If you need the map to find your way to resources—to demonstrate, in a system that allocates support through categorical eligibility, that you have needs the system is designed to address—then the map is necessary even when it is imprecise. The school that provides additional time in examinations to students with a dyslexia diagnosis is not providing additional time because the diagnosis is a perfect description of the student’s specific relationship to reading and writing under time pressure. It is providing additional time because the diagnosis is a recognised category that the system has decided to attach a resource to. Without the category, the resource is not available. Without the diagnosis, the category is not accessible. Without the map, the territory cannot be navigated within the system’s terms.
This is the first and most practical defence of categories: they are the currency of resource allocation in systems that cannot function without them. The school cannot provide every student with every accommodation they might benefit from, because the school does not have unlimited resources and cannot individualise fully across a population. The category is the compression that makes the allocation possible. The student who can demonstrate membership of the category receives the resource associated with the category. The student who cannot demonstrate membership does not.
The problem is not the category in this context. The problem is that the resource is attached to the category rather than to the individual. The student who has the need but not the diagnosis does not receive the support. The student who has the diagnosis but whose specific needs are not well-described by the diagnostic category may receive a form of support that was calibrated for the average member of the category rather than for their specific situation.
There is a design inversion available to this arrangement that some systems have begun to explore and that the current arrangement does not primarily use. Instead of attaching the resource to the category and requiring the individual to demonstrate categorical membership in order to access it, the resource could be attached to the individual and the individual could direct it toward the provision that addresses their actual situation. The category becomes unnecessary because the allocation mechanism no longer depends on it. The individual’s judgement about what they need replaces the system’s judgement about which category they belong to.
The French system of personal training accounts does something like this for adult education. Every worker accumulates a fund that belongs to them and can be directed toward learning they choose, independent of their employer’s preferences and independent of the categorical eligibility structures that most public training programmes require. The fund is theirs. They decide what to spend it on. The system does not require them to demonstrate that they belong to a particular category of worker before they can access it. It requires only that they are workers.
The Singapore approach extends this further in its aspirational framing, if not always in its operational reality—the idea that every citizen has a learning credit that persists through their life and can be deployed as their circumstances and interests change, rather than as a one-time allocation in the educational years that fixes their learning trajectory early and provides little flexibility afterward. The resource follows the person. The person directs the resource.
The implication for education of attaching the resource to the individual rather than to the institution is significant and extends beyond the question of neurodivergence specifically. If schools receive funding based on the students they attract, and students direct their funding toward schools that serve them well, then the school’s survival depends on its capacity to serve the actual students who arrive rather than the idealised student the curriculum was designed for. The school that can only serve Norm and Norma’s children will lose students to the school that can serve the wider range of children who actually exist.
This is the market logic applied to education, and it has the virtues and the problems that market logic consistently produces. The virtue is that it creates a mechanism for the institution to be accountable to the individual rather than to the category. The problem is that it assumes the individual has the information and the alternatives required to make the market function. The parent in a rural community with one school cannot take their funding elsewhere if the school is not serving their child. The parent who does not know that their child’s difficulties have a cause that a different school might address better cannot make an informed market choice. The school that learns to attract the children who are easiest to serve will attract them, and the children who are most expensive to serve appropriately will be left in the schools that could not attract anyone else.
The market solves some of the category problem and generates others. It replaces the categorical gate with the market gate, which is a different shape but which still filters in ways that are not neutral in their effects across the population.
The deeper problem that the category-versus-individual question reveals is the problem of what the institution is for. The school that is designed to produce a specific kind of output—the student who can pass the standardised examination, who has absorbed the curriculum, who can demonstrate the capacities the credential requires—is a school designed for Norm and Norma’s children because the examination was calibrated for a population that includes them. The student who learns differently from the way the examination measures does not fit the school’s purpose as the school has defined it. The school can accommodate the student through special provisions that modify the examination process for them, or it can define the student as outside its purpose and direct them elsewhere.
Neither of these is a response to the student. Both are responses to the institution’s self-definition. The school that was designed to serve the student rather than to produce the output would begin with the student’s actual situation and develop the provision from there. This school does not require the category because it does not allocate resources through categorical eligibility. It requires only the student and the willingness to ask what that student needs and whether the institution can provide it.
This school is harder to run than the school that applies the category. It requires individual assessment, individual provision, individual evaluation. It cannot rely on the category to compress the complexity of individual students into a manageable set of responses. It must manage the complexity directly. This is expensive in time and attention and the particular kind of professional skill that can hold individual variation rather than requiring it to fit the available slots.
Most institutions do not have this capacity and are not designed to develop it. The category is the compression that makes the institution manageable at scale. The scale is the problem.
The political function of categories is the dimension that the intellectual critique of them tends to underweight. The LGBTQ+ community did not build its political capacity by dissolving into individual variation. It built political capacity by aggregating individual experience under a shared identity, making the shared experience visible as a collective condition with collective causes and collective stakes. The category created the constituency. The constituency created the power. The power created the legal changes that reduced the harm.
The neurodivergent community is attempting something similar. The shared identity creates visibility, community, and the collective capacity to advocate for structural changes that individual complaints cannot produce. The category is the tool for this, even when the category is scientifically imprecise and personally reductive. The imprecision is the cost of the political utility.
The person who finds the category reductive—who experiences the label as a reduction of their specific configuration to the checklist of expected characteristics, who finds that the people around them see the diagnosis rather than the person—is experiencing the cost of the category’s utility. The cost is real. The utility is also real. The question of whether the utility justifies the cost is not answerable in the abstract. It depends on who is bearing the cost and who is receiving the utility, which is not always the same person.
The map is not the territory. The category is not the person. These are true statements and they do not dissolve the need for maps or categories in systems that cannot function without them. They are reminders of the gap between the tool and the thing it is representing—a gap that exists in every map and every category, that the map cannot acknowledge without ceasing to function as a map, and that the person who is represented by the map experiences every time the map is applied to them as though it were a complete description.
The territory is more complex than the map.
The person is more than the category.
Both statements are true.
Both remain true regardless of whether the map is useful.
The Vorpel Foundation