The document discusses techniques for software development that are still effective despite attempts to forget them. It presents an analogy that if information technology (IT) were a person, it would be diagnosed with attention deficit hyperactivity disorder (ADHD) due to an inability to focus, retrograde amnesia because it does not recall past experiences, and obsessive-compulsive disorder (OCD) as it follows processes regardless of effectiveness. Old techniques like analysis, architecture, and modeling are discussed as still valuable despite being overlooked at times. Domain-driven design is presented as an example of relearning an old lesson.