rmsgrey wrote:There's a notional venn diagram of meanings, but when a region is contained within another, we tend to treat it as an enclave rather than an overlap.
Yes, this nicely captures the way I feel about the burgers-as-sandwiches thing. If someone asks "is a burger a kind of sandwich?" I kind of picture a "Venn" (actually Euler) diagram and note that, yeah, I guess technically the burger circle is fully enclosed within the sandwich circle, but it seems like a distinction needs to be made between things that are technically sandwiches
including all named subsets of sandwiches (like burgers), and something like sandwiches proper
, that is, sandwiches that are not part of specially named subsets of sandwiches generally. (Along the lines of how a "proper class", the mathematical object, is any class that is not
a set, even though all sets are classes).
OTOH, something like a burrito or pita or taco or hot dog I'm not sure where I want to put in that diagram. Burritos and (well-stuffed, burrito-like) pitas seem like they go in a circle together, as do tacos and hot dogs (together with each other), and all of those seem like they belong together in one big circle, which... also contains the sandwich circle, maybe? Related to the birds-and-dinosaurs thing: it's long seemed to me that instead of saying "birds are dinosaurs", we should have said all along that "dinosaurs were birds", or maybe something "birdiform"-esque: dinosaurs are the set of birds and everything more closely related to birds than to any other extant clades. Likewise, it seems like burritos and pitas and tacos and hot dogs are... sandwiform? They're more closely related to sandwiches than to anything else, conceptually-speaking, but it seems like sandwiches are technically a subset of the category that contains all of those things.
Some taxonomy like:
*Foods contained in bread
**Solid foods contained in bread
***Jumbles of solid foods wrapped loosely in bread
****Jumbles of solid foods incompletely wrapped loosely in bread
*****Certain ways of making pitas
****Jumbles of solid foods completely wrapped loosely in bread
*****Pitas made the right way damnit
***Sandwiches: layers of food between layers of bread
*****Sandwiches proper (which can still be made with pita or tortilla or any other bread so long as it's layered)
*****Burgers (patties of ground foodstuff in a bun)
I'm really uncertain about that last part there, but I feel forced to include it. I mean, if you took two pieces of focaccia, and put melted mozzarella, marinara, and pepperoni in between them, that's unquestionably a sandwich. If you take the top piece of focaccia off, you have a pizza, so it seems like a pizza has to count as an open-faced sandwich.