Q: Given a text, write a compressed version of it in a single sentence.
c) So, when I received Krugman's letter shortly after Complexity came out, I was puzzled: He was complaining that I hadn't referenced others in the increasing-returns field--Paul Krugman among them--although I had explicitly done so.
A:
when I received Krugman's letter, I was puzzled: He was complaining that I hadn't referenced others in the increasing-returns field although I had explicitly done so.