I think the corner store argument still applies even if the store does carry hotdogs, like a 711 or a Costco. In any case, I think the point is not just that it’s unexpected if someone asks you to pick up a hotdog after saying they are in the mood for a sandwich, which could indeed be explained by hotdogs not being carried at the store. Rather, it sounds like they changed their mind about what they want. Here, whether or not the particular store happens to carry the item doesn’t seem as relevant.
This being said, I agree with your point that this argument is relative to a community of speakers, and it’s possible that there could be different communities using “sandwich” differently. Is just that, if this sort of argument applies to all users of the words “hotdog” and “sandwich”, it would be pretty good evidence that hotdogs are not sandwiches, whether these concepts are socially constructed in any special sense or not. They seem no more socially constructed than many other concepts for which we can definitively answer “Is X a Y?” questions.
I think the corner store argument still applies even if the store does carry hotdogs, like a 711 or a Costco. In any case, I think the point is not just that it’s unexpected if someone asks you to pick up a hotdog after saying they are in the mood for a sandwich, which could indeed be explained by hotdogs not being carried at the store. Rather, it sounds like they changed their mind about what they want. Here, whether or not the particular store happens to carry the item doesn’t seem as relevant.
This being said, I agree with your point that this argument is relative to a community of speakers, and it’s possible that there could be different communities using “sandwich” differently. Is just that, if this sort of argument applies to all users of the words “hotdog” and “sandwich”, it would be pretty good evidence that hotdogs are not sandwiches, whether these concepts are socially constructed in any special sense or not. They seem no more socially constructed than many other concepts for which we can definitively answer “Is X a Y?” questions.