That doesn't speak of advancement, it speaks of stagnation for the most part. And sure, technology has changed, some ways of doing things are different, but th

That doesn't speak of advancement, it speaks of stagnation for the most part. And sure, technology has changed, some ways of doing things are different, but the core software engineering fundamentals haven't changed that much. Take a classic book that is definitely showing its age, Code Complete, and look at what that book has to say about what the fundamental nature of software projects is: managing complexity. That's still true and will always be true, that's what software is all about. As I pointed out in another comment, you could go back even further to a book like The Mythical Man Month and find tons of lessons that are still applicable today. Because despite all the technological advancement that's happened, the fundamental practice of software engineering has not advanced much. "Agile" is just a way to make sure that a team is able to do anything at all and actually ship something that works and is not miles away from what the customer wants. Agile isn't an advanced technique, it's a rudimentary technique to rescue potentially failing projects/teams. And security? Security is more important than ever. But what does that mean? That means that dev shops follow, oh, say 10% of the most important security best practices instead of 1% or 0% as they might have done 20 years ago. And it means you have to protect against a few specific kinds of attack vectors that were previously unknown. But that's not a sea-change in the way things are done, it's just incremental changes to details.