Discussions with:

Winsor Naugler III
Skratch Garrison
 Tim Wagner
 Tamara Koyn
 Orly King


Bryan Burke
Bill von Novak

By no means does this presentation represent all my own ideas. I had many discussions, both live and by e-mail, with others who have thought long and hard about the issues of spotting and separation. In particular I wish to mention Winsor Naugler, some of whose figures I have used.