In most contexts we interpret "speech" quite broadly. Speech is the transmission of information. Blueprints consist of information structured in a particular me

In most contexts we interpret "speech" quite broadly. Speech is the transmission of information. Blueprints consist of information structured in a particular meticulous way which can be beautiful as well as practical and informative. Novels and paintings also fit that description. A painting could show how a bomb is constructed. A novel could explain how to commit a crime. So I'm surprised public-domain blueprints aren't already considered "speech" as a matter of settled law. In the case of commercial blueprints I suppose I could imagine an argument for considering them "proprietary information", but in this case where the producer wants the information to get out and is not claiming copyright over it...posting a blueprint on the web is like posting a flyer on a telephone pole. It's a speech act. The federal government isn't generally allowed to prohibit speech acts.