In the interview section the sidebar navigation lists the articles.
In the articles section the sidebar navigation lists the interview questions.
I am wondering if this was intentional to encourage visitors to check out other sections of the site but I found it confusing because when I clicked a category I moved to interviews instead of another article category.
It also means that there is no easy way to jump around inside the articles or interviews sections because once you go into a category there is no menu down the side you can use or the table menu along the top which is on the main pages.