That isn't true obviously. It's like saying lists aren't a programming language.

It isn’t in itself. Neither is any AST. A programming language is the semantic rules that can execute it.

Until it is.

From the guy who created JSON:

>JSON (JavaScript Object Notation) is a lightweight data-interchange format.

From Wikipedia:

>JSON is an open standard file format and data interchange format

Now tell me how JSON is a programming language.

I might be thinking of JSOLN. Let's talk about that instead.