**Abstract:**
This paper investigates a novel puzzle regarding the indirect scalar
inference (SI) 'not all' -> 'some'. When 'not all' is embedded in a
Strawson-Downward-Entailing context, some constructions give rise to more
robust SIs than others even though they express the same proposition with
the same lexical items. I argue that this contrast is related to whether or
not the quantifier phrase occurs in a conventionalized focus
construction. If it does, the SI is not derived by implicature calculation
but arises from an existential presupposition triggered by the focus
construction. Hence, it is not sensitive to contextual considerations.
**Time:**
Tuesday, 20 December, 16:15-16:45 (virtual)
**email:** omri.amiraz@mail.huji.ac.il