At least for me during my PhD I spent more than a full-time day to completely understand papers that were interesting for my research.
At least for me during my PhD I spent more than a full-time day to completely understand papers that were interesting for my research.
From my experience in physics:
You can read a paper in 15-30 minutes and get the main points and contributions.
For good papers, you can spend multiple days to really understand the paper.
And for really good papers you can spends months to completely understand them, then extend them, and then publish your dissertation.
http://blizzard.cs.uwaterloo.ca/keshav/home/Papers/data/07/p...
So a bit of clarification to my comment. If I spend months reading papers about the same topic, the first papers will take me a lot of time but the last papers will take me less time because I have a lot of background and I don't have to check references, review concepts, understand maths proof or whatever. Probably those papers are very related and share a lot of information.
Good papers (for whatever you think it is good) require time to read because you really want to understand it completely. Bad papers (for whatever you think a bad paper is) require time to read because you cannot be sure if that paper is relevant for you unless you understand it completely. Although at the end you have a ton of papers to read and you check the abstract and decided whether spend time on the paper or not.
In my experience, time required varies quite a lot between papers and authors. If you take a paper from, say, top 1% (or 0.1%) of papers published on some broad topic, you can probably read through it once and get some relatively good understanding of what the author was trying to say (and very likely enough to write a short re-cap).
This is definitely not true for the remaining 99% of the published scientific literature. At one point I had the idea of keeping up with my field of research by setting up Google Scholar alerts. This resulted in about 1 paper per 2-3 days that seemed to be worth studying based on the title and abstract. Still at that rate I found it quite impossible to keep up with all the content that dredged up.
Of course, for a seminar class, you do the strategic thing and read enough to not be caught flat-footed during seminar, and to come up with a few salient points of discussion.
I looked some at the papers read for this project and they seemed to be very systems-heavy. Having taken both theory-heavy and systems-heavy seminar classes, the systems-heavy seminar reading loads were much easier. You could probably read 5-8 systems papers a week, to comprehension, if you really wanted to.