Box<(Cat, Box<Cat>)>
@quephird [cat + [cat]] as per RFC9402
RFC 9402: Concat Notation

This document defines the Concat notation: a text-based language used to describe pictures and videos whose subject includes cats, containers, and their interactions.

@quephird the kind that when unwrap()ed, claws instead of panics
@aredridel @quephird don't look at it! it's recursive and if you keep looking you'll see more and more cats in boxes in boxes with cats in boxes in boxes with cats in boxes, and... <outOfMemoryError> rebooting...
@quephird this is definitely a CSS lesson
@quephird von Neumann’s successor function, if von Neumann got drunk with Schrödinger one night.
@quephird new cute set theory has landed
@brood @quephird useful for constructing the catural numbers? <ducks>
@quephird You have found the number 2!
@quephird MATCH (c0:Cat)-[r0:in]->(b0:Box)->[r1:nextTo]->(b1:Box)<-[r2:in]-(c1:Cat) RETURN * LIMIT 1
@bracken @quephird I'm in this graph query and I don't like it! 🙃

@quephird

func box (int layer) {
if (layer == numberOfBoxes)
return (cat);
else
return (cat + box(layer-1));
};

@quephird
cat's version of "inception"
@quephird that’s some cat in the box with some box holding cat and a none box.

@quephird The cat in a box with a cat in a box.

I'm sure Dr Zeus could do something with that...

@quephird ✅ your markup is valid
@quephird We need a full coding course with cat examples. 
@quephird When Schrödingers cat meets babushka, a cat in a box in a box in a box… Physics has never been so fluffy.
@quephird a box, inside which is a cat and a box, inside which is a cat.
@quephird
Ah, a multidimensional array 😍
@quephird I see a terrible pun on tail recursion forming!
@preciousoso Thanks for sharing, kitties are awesome
@quephird Schrodinger didnt account for this possibility.
@quephird well, Schroedinger, now what?
@quephird Schroedinger would be surprised that both of them are alive.
@quephird
No, I think its
(CatxCat)^2Box