About the author…

David Bryant Copeland

Hi, I'm David Bryant Copeland, though most people call me "Dave". I'm a computer programmer with over 24 years experience. For the past 6½ years, I was director of engineering and Chief Software Architect at Stitch Fix. Before that, I worked at LivingSocial, and before that, at Opower. That's 11 years of working at startups and watching systems grow. That all means I am way familiar with the SOLID Principles my book here eviscerates and have seen their damage first-hand on several teams.

I've written a few other books, “Build Awesome Command Line Applications In Ruby” and The Senior Software Engineer, and am co-author of Agile Web Development With Rails 6. I also write frequently on my blog.

If you are looking for a more serious take on SOLID, this book began after I wrote five such serious takes:

• Single Responsibility Principle
• Open/Closed Principle
• Liskov Substitution Principle
• Interface Segregation Principle
• Dependency Inversion Principle

Do note that the conclusions are quite similar—you should not bother with these principles and using them will make your life more difficult and your software much crappier.