"Am I missing something here or did the author simply make a poor analogy?" I'm not sure I understand your reading comprehension problem. The author not only e

"Am I missing something here or did the author simply make a poor analogy?" I'm not sure I understand your reading comprehension problem. The author not only explicitly stated his analogy about the similarities of Groupon and a Ponzi scheme but also defined and limited the scope of that similarity in the same sentence--not to mention the tediously long paragraphs that followed that were spent expounding on his thesis.