There are places where tl;dr implies a lack of focused attention. On HN, it often implies "I couldn't get the basic idea quickly enough to be sure this is wort

There are places where tl;dr implies a lack of focused attention. On HN, it often implies "I couldn't get the basic idea quickly enough to be sure this is worth focusing my attention on; can someone summarize for me so I can make a better-informed decision?"