Controlled input work depends on state placement: compare 10, 100, and 500 fields
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Field count alone does not determine whether a form should use controlled or uncontrolled inputs. Even with controlled inputs, placing state in each field meant editing one field invoked only one input component. The experiment compared parent-owned values, field-local state, and DOM-owned values across forms with 10, 100, and 500 fields. Reducing repeated component work requires looking at state placement as well as whether inputs are controlled. Count component calls for the same input operation These are the three field components. trace is an experiment counter, not application state. The
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