Donald brought up his really interesting thinking in this post that "with B & W more so than with a colour image, you need to have an idea in your head as to what the final image is going to look like before you start the post-processing."
This is one of the few times that I disagree with his thinking; I believe that it's equally important to envision the look of the image regardless of the style of image being made. Moreover, I think that holds true before releasing the shutter, not just before starting the post-processing.
If it becomes helpful for me to further clarify my thinking, I'll be happy to do so. In the mean time, I look forward to an engaging discussion of ideas about this from all corners of the world of photography, not only among those of us who have a particular penchant for black-and-white photography.
EDIT: I imagine that this discussion has the potential to go farther and wider than perhaps in most threads. Let's please don't feel that we have to stick to the exact point that Donald made. I encourage everyone to take the gist of this first post to whatever related topic will be helpful and informative for whatever reason.