What did Wertheimer (1923) actually list as grouping factors, and how far do they transfer to layout design?

Wertheimer's 1923 paper (Ellis's 1938 English translation, openly readable on Classics in the History of Psychology) names factors of proximity, similarity, uniform destiny (common fate), direction, closure/good curve, objective set and past experience, demonstrated with dots and lines. The common design-textbook list ("proximity, similarity, closure, continuity, common fate") is a later condensation: in the text read, closure is stated not to be always dominant, similarity is called a special case of the good Gestalt, and no layout or interface example appears. Use it as a source of grouping hypotheses to test, not as proven layout laws. Curator qualifications: 7 of 7 excerpts present. Footnote 1: 'Grateful acknowledgment is hereby made to Julius Springer, Verlagsbuchhandlung, Berlin, for permission to reproduce the illustrations'. Footnote 6: 'The Factor of similarity can thus be seen as a special instance of The Factor of the Good Gestalt' (unbracketed); translator/editor notes on this page are bracketed (footnote 3 '[... the term "Prägnanz" cannot be translated ...]'), so footnote 6 appears to be Wertheimer's own note in translation, not a translator's note as F2 says (curator inference from the bracket convention; not certain). Copyright note explains US renewal rules generally; it does not name this translation. Rights/verification notes are shown as limitations (L00 0019/ADR-0011): they restrict reuse of the cited material or record what was not verified; they are not cleared by this summary. Limitations: [rights_conflict_record] Rights conflict preserved: site-level public-domain-by-non-renewal note vs footnote 1 permission credit for illustrations; translation status not stated. Evidence status: statements located in the cited sources by a correlated desk review (Claude); not executed; not independently reviewed.

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