Elshaddai comments 3 and 4

3. Although I understand what Valeria is saying, I don't agree with her when she mentions that there was foreshadowing for the "visitor" scene. The doctor didn't really choose to ignore them because there was no foreshadowing for him, the foreshadowing is for the readers. At this point of the story, Landon isn't alive, Utterson is reading his letter. Also, Jekyll had been normal when he asked Landon for the favor. 

4. Many people seem to think that Landon's decision was all his fault, but I don't agree with that. I think that, although Landon's choice was unwise, considering the circumstances, he he wasn't completely at fault. Stephanie and a few others point out that, if any of us were asked that question, we would probably answer the same way.