# Tweet by [@keefmoon](http://twitter.com/keefmoon) on 2017-01-12 20:00:39 > [!INFO] Archived from [original tweet](http://twitter.com/keefmoon/status/819635222262272003) In reply to: [@pilky](http://twitter.com/pilky/status/819634567195848709) @pilky I dislike having to know that the value and error are mutually exclusive. Separate blocks means each block has only what it needs.