1) In my experience the more darkroom 'tricks' one knows implies that the photographer routinely produces negatives of, shall we say, widely varying technical quality. They often expose in a haphazard way and work in the darkroom later to pull a good print from the negative. Others have no idea what they wan t in the final print when they expose, make exposures that will provide some information in the negative and then 'post-visualize' in the darkroom. To pull good images from these negatives can require all sorts of manipulaations (including nose oil). I know very few darkroom tricks and techniques.
This is the biggest lump of doo doo I have ever read here. Mike get a grip old buddy.