> But sometimes even articles in Nature have been printed elsewhere first, (like a 'beta test' for the article - peer review nevertheless), usually in journals

> But sometimes even articles in Nature have been printed elsewhere first, (like a 'beta test' for the article - peer review nevertheless), usually in journals specific from the field. Not true. Republishing already-published work is specifically disallowed by Nature and most high impact journals. Doing so merits a retraction.