This book really reminded me on books for lectures during my university time. I know this book is quite old, but still it felt a bit too heavy and the academic approaches with the models and the Z language didn't help here either. What I found interesting though was the comparison of different architecture approaches for concrete examples, like the robot ones, although I think the results are a bit difficult to grasp. And I also liked the points about migration from craftsmanship to engineering: My impression is we we still didn't achieve this yet.