I often try, but (1) it costs some time, and (2) sometimes it is quite difficult, especially to comment in a way that I think would be understood by the author. Sometimes the author is just so far away in the mental space that I don’t believe that a short message could reach him… and I don’t have a time to write a long one. (I could write a short message that would predictably fail, just to signal that I am a nice person, but that wouldn’t help anyone.)
I often try, but (1) it costs some time, and (2) sometimes it is quite difficult, especially to comment in a way that I think would be understood by the author. Sometimes the author is just so far away in the mental space that I don’t believe that a short message could reach him… and I don’t have a time to write a long one. (I could write a short message that would predictably fail, just to signal that I am a nice person, but that wouldn’t help anyone.)