Short note on writing

Frequently I will think of something I should have said in a paper. I'll be reading a related paper, or writing another section of the same paper, and think, "Damn, I really should have clarified X in paragraph Y." It is always heartening when I go to paragraph Y and find that it does in fact already contain point X. It helps me to believe that I am able to keep track of what my argument is and how I intend to make it for more than a single day.