Misleading headline alert. All code is debuggable. Logging, mentioned in the article, is more similar to code tracing. It may or may not be useful, because the

Misleading headline alert. All code is debuggable. Logging, mentioned in the article, is more similar to code tracing. It may or may not be useful, because the log might omit information crucial for debugging. There is no way someone can write logging code for every scenario that might break in production. To me, easily debuggable code (whatever that means) is code written clearly with good documentation. Often well architected systems are modular (rather than a spaghetti mess) and problems are easy to isolate.