>> I think types are particularly valuable for libraries. > Yes, where would I be without the _RelationshipBackPopulatesArgument type of ... (proceeds to list

>> I think types are particularly valuable for libraries. > Yes, where would I be without the _RelationshipBackPopulatesArgument type of ... (proceeds to list a signature with over 40 parameters) You would be left wondering which of the 40+ arguments provided to a given invocation is not what was allowed without a compiler to tell you. Have fun tracking down which one, or ones, is causing the problem.