That's also true of an object parsed with JSON.parse

JSON.parse won't parse a function call/literal. Direct injection would.

You're right about that, but I don't think you're following the argument. The argument was that there could be a `SimpleObject` that's limited and parses quicker. A `SimpleObject` wouldn't parse a function call, just like JSON.parse.

As OP said, "subset of JS Objects". This subset of JS objects wouldn't support function calls.

Don't we already have that, plus a transport medium with JSON?

The speed-up is at object instantiation.`a.foo = window.alert` could only be done post instantiation.