> A recipe for a cake And there we come to the nuance of copyrights, at least in the US: you can't copy the text of the recipe, but the recipe itself don't hav

> A recipe for a cake And there we come to the nuance of copyrights, at least in the US: you can't copy the text of the recipe, but the recipe itself don't have protection itself. Specifically, the text of the recipe is literature (which is protected), the recipe itself are instructions (which is not protected). This is the whole justification into clean-room design and reverse-engineering in software. Also psuedonymous or even anonymous publications do have copyright (insert a legalheap of asterisks here). This actually sadly results into something called "orphan works", where they don't knew (or if they knew cannot find the next-of-kin/successor company/maybe even the government where the company was incorporated) where they can ask for permission.