Ha-HA! Nobody expects the Comp-Sci inquisition!
Our secret weapon is functions. Everything can be reduced to functions. Functions and types. Functions, types and environments. And macros. And continuations. And abstract types...
Objects! Objects and classes. Objects, classes and a metaobject protocol. Or prototypes. Objects, prototypes, methods, messages...
Files! Files and folders. Files, folders and processes. And threads. And semaphores. A
I'll come in again.
And tail call elimination!