# Design * [No Silver Bullet — Essence and Accidents of Software Engineering](http://www.cs.unc.edu/techreports/86-020.pdf) * [Traits: A Mechanism for Fine-Grained Reuse](http://scg.unibe.ch/archive/papers/Duca06bTOPLASTraits.pdf) * [THING-MODEL-VIEW-EDITOR an Example from a planningsystem](http://heim.ifi.uio.no/~trygver/1979/mvc-1/1979-05-MVC.pdf) * :scroll: [Out of the Tar Pit](out-of-the-tar-pit.pdf) > We identify common causes of complexity and discuss general approaches which can be taken to eliminate them where they are accidental in nature.