I love how many of the answers are clearly right but contradict each other. This could maybe have been explained by consulting an anthropologist of the kind who understands that sandwiches are socially constructed--it's a sandwich if the community accepts it as a sandwich, and there are many communities, but also some of us belong to several of those. One person had a very good analytic-philosophy kind of answer--that if you asked somebody what kind of sandwich they'd like you to get them from the deli you wouldn't expect them to answer "hotdog". But the same argument would apply to a banh mi or a croque-monsieur, because the deli doesn't carry those either, but nobody would deny that these are sandwiches, though they might say "they're not my sandwiches."
I love how many of the answers are clearly right but contradict each other. This could maybe have been explained by consulting an anthropologist of the kind who understands that sandwiches are socially constructed--it's a sandwich if the community accepts it as a sandwich, and there are many communities, but also some of us belong to several of those. One person had a very good analytic-philosophy kind of answer--that if you asked somebody what kind of sandwich they'd like you to get them from the deli you wouldn't expect them to answer "hotdog". But the same argument would apply to a banh mi or a croque-monsieur, because the deli doesn't carry those either, but nobody would deny that these are sandwiches, though they might say "they're not my sandwiches."