People are obviously not getting this popular joke in academia. Open a book such as Introduction to Algorithms by CLRS and you will see its all about creating algorithms in pseudo-code, proving its correctness, evaluating runtimes etc. Authors not only pass on "systems engineering" but even producing algorithms in actual language that can be compiled on actual computer. Don't get me wrong, I love the book and have gone through every single page and vast majority of excerices twice and truly enjoyed it. It is then when it hits you what computer science is really about.
The folks in fields like mathematics or physics didn't used to consider "Computer Science" as "real science". As fun fact, there were no journals on computer science for quite long time. Researchers like Dijkstra would identify themselves as "Mathematician" and publish their now very well known algorithms in mathematical literature :).
