I am flabbergasted. How self-absorbed does one have to be to be offended by someone re-using sections of a paper one has done earlier in a later paper?

No, seriously. If I write 5.000 words on a topic and then re-use 500 words I myself have written earlier without attribution because they are appropriate to the current article, how do you make that «bad manners».

I meant what I said about people who can’t see this without help earlier.