Conversation with Ralph Johnson About Big Ball of Mud Systems

This is a video transcript of a Skype conversation I had this morning with Ralph Johnson this morning about refactoring VistA.  I think that there are some fascinating ideas here about thinking about refactoring in layers, rather than a single lump, as well as the notion of creating a “semantic overlay” layer that would open VistA up to the rest of the Linked Data world (with appropriate security, as already expressed in VistA). Ralph is one of the gurus of object orientated software, agile development, and refactoring. I had a video chat with Ralph Johnson, software refactoring and object-oriented patterns guru, regarding ways of looking at refactoring VistA...