Do we really need both? I have really never done primary research when I have the internet right in front of me. Primary research is more work and not that I am trying to be lazy but sometimes I just don't know when I'll find the time. I actually JUST came up with an idea! I am going to interview a professor as my primary research. That should give me good information and tie into my essay just fine. But the question still stands, Is it important or necessary to have both primary research and secondary research? Secondary research is much more handy.
On the other hand, I really like how they showed the writing process and planning process for other students. That was awesome !! And necessary because it just helped me fine tune my writing process. Always learning and advancing !