How to Eat an Elephant. Or, how to architect a codebase wide refactoring project. In this advanced refactoring session, we’ll look at such things as functional decomposition, code criticality, the correctness continuum, sub-tree refactoring index and prioritisation. All these terms will be defined, explained and demonstrated, so that by the end of this presentation you’ll have the knowledge and confidence to architect such a refactoring project… or eat an elephant, whichever you prefer.