I have a rough draft of my PhD dissertation, on which I was working on and off for about a year, but mostly I was doing other coursework. I have about 90 pages so far.
My dissertation advisor tells me that what I should do is pretty much make sure it is well-written and apply the theory to a few examples. By my estimates, if I go berserk on this, I can finish all that in under one month.
However, the dissertation advisor says that usually, it takes about 3 years to complete a dissertation in my department, and I should not expect to complete it soon. Also, he says that the level of my draft was intermediate (some time ago) and not yet advanced (but he hasn't reviewed the current one yet).
When I ask or suggest about expanding the scope of the dissertation / adding additional chapters, the dissertation advisor says he does not think it is necessary.
So, it appears that the dissertation is almost complete, but I should not expect to complete it soon. How should I interpret this apparent contradiction?