Interestingly, with a nod to the Try CoffeeScript online app, he recommends that proposals be made more interactive:
By writing such a source-to-source translator, existing language users can experiment with the new syntax easily in a browser environment without requiring a separate compilation pass. This also allows users to build an in-browser translation UI (similar to try CoffeeScript), which can improve general understanding of the new syntax and produce important feedback.
I feel this could be one of those watersheds, in which an outdated form inherited from an earlier era is replaced with a new hybrid of text and interactive software. This is a fascinating glimpse of the future. Can you imagine the day when every proposal for a new public works project or real estate development is required to be accompanied by interactive online tools for exploring potential consequences and outcomes?