> That's what XML had and has. JSON became successful because it did not do this. Discuss. XML is more self describing. I think what people are talking about i

> That's what XML had and has. JSON became successful because it did not do this. Discuss. XML is more self describing. I think what people are talking about is more like protocol buffers or capnproto -- described by an "oracle" (like a shared description file). That makes validation trivial, and you get known types instead of "is this a '1' or a 1 or a true or a 'true' here?"