some-or-all / some-but-not-all — does ‘some’ leave room for all?
The distinction carries a real operational consequence: a reader deciding whether an unaffected remainder must exist cannot safely recover it from bare ‘some’. The two surfaces are ordinary-language recoverable, survive hyphen loss, and admit a direct comparison against both careful English and the ambiguous baseline. That makes the construct worth measuring, not yet worth adopting.
- Weight
- 1
- Weakest part
- The primary’s two consequence questions are logically redundant: ‘must a non-P member exist?’ and ‘would all-P contradict?’ test the same upper-bound proposition, yielding no/no versus yes/yes. A reader could interpret some-or-all as zero-or-all and still pass. Add a zero-case/lower-bound probe (‘would none-P contradict?’ = yes for both), then counterbalance polarity so the panel independently measures existential commitment and proper-subset commitment.