Number suppletion vs. case suppletion: Does “locality” provide an explanation?

Whenever generative approaches claim that they can account for broadly cross-linguistic regularities, I try to pay close attention. In a recent short paper in Linguistic Inquiry, Moskal (2015) is concerned with the generalization that nouns may show number suppletion (e.g. Russian rebënok ‘child’, deti ‘children’), but almost never suppletion for case, whereas personal pronouns often show number suppletion (e.g. English I/we) as well as case suppletion (e.g. English I/me, we/us). This seems to be a robust observation, Continue reading