Distinguishing Mathematical Consistency from Physical Realizability

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In many physical models, lower-dimensional manifolds are mathematically self-consistent, but dynamically incomplete unless augmented by additional parameters (for example, time for change, or external structures that allow evolution).


This suggests a distinction between mathematical consistency and physical realizability: a model may be well-defined internally, yet require extra structure to represent dynamics or observable processes. I am interested in whether this distinction is already implicit in standard physical frameworks, or whether articulating it in terms of dimensional dependence offers any conceptual clarification.
 
I deeply respect people who are engaged in self-education. Nevertheless the problem of self-education is as follows. A person reads textbooks and forms his own opinion about what he has read. Then he tries to solve a problem and faces the fact that his answer is not equal to the one in the end of the book. Then he goes to specialists and asks them what the story is. He expects that specialists will help him to solve the problem and they will do that by using his own understandings and...

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