[tantalor]

> without requiring all consumers to have your schema

Then how is the client supposed to handle the data? Guessing?

> backwards compatible schemas

> text and binary representations

> type system

> maps well to several languages

Protos have all these.

> S-Expressions

Okay? Is that useful?

[swaranga]

>> S-Expressions >>Okay? Is that useful

Yes, super useful. Depends on how your application needs to use S-expressions. You could define DSLs for a very expressive and complex rules-engine with S-Expressions forming your rules. Now you can write your rules as text, pass it around and build rule evaluators of those expressions all on top of Ion.

[mattdeboard]

> Okay? Is that useful?

I bet it's super useful if you have sexprs in your data.

[jonhohle]

It's interesting to have languages written for and in the same specification as your data.