Science is a profession like others. When you are earning your Ph.D. you learn to think about the field by reading papers and discussing with peers and colleagues, yes.
The intro of a well-structured research paper should follow this pattern:
- This is a really important topic and here is why.
- What is the current state of the art in this field? (this comes from reading 100-1000 publications on the topic and selecting the 5-10 most relevant to the next point). HOWEVER, the state of the art leaves this question unanswered.
- Here are some reasons why the idea in this paper can help answer that question (cite another 3-10 papers).
- Our hypothesis is that XXX can answer the important unanswered question (where X is derived from the prior section).
So, what I am getting at, a scientific publication is part of a conversation. When I'm citing the 5-10 papers to summarize the state of the art, I'm assuming the reader has read 50% of the 100-1000 papers which I also read, and knows where the 5-10 which I cite fit into that broader context.
So any paper, in isolation, only has a fraction of its meaning in the publication. The real information is the surrounding context.
Pro tip: if I'm reading a paper and want to understand it better, I also read one or two of the papers it cites, and one or two papers which cite it. Also, it can take a few times through before I start to understand what the author is trying to say.