[ysofunny]

numbers have all of mathematics as a background which is what makes it so easy to design apis for them

graphs are a much newer development, I think there's a very deep connection between category theory and graphs in general (and also computers make both much more useful somehow)

lambda calculus can be used to define numbers but it's a wonky construction, it's reminiscent of how sets can also be used to define numbers.

[kragen]

that seems reasonable