I first learned in 209 about how to develop film, but never really understood how the chemicals worked. Having an understanding of this from the book helps me take care when I develop film, and alos understand how to manipulate it. I only understood that you can take out your film after it has sat in fixer, but I didn’t know that was because it dissolved the light sensitive silver that remained. I also learned how to “push” development of film by over developing the film. 

Michael Kenna talked about doing this in one of his interviews, but by pulling back on developing in darker photos, or photos taken at nighttime.

The passage also compares the difference of all RC a fiber paper brands which I find very helpful since the tone of a print could change it dramatically.