Mark Miller recommends programmers new to Object-capabilities read Marc Stiegler's paper on the Principle of Least Authority(POLA).
Being a genuine lazy programmer I searched and found these wonderful tech talks at Google.
YOUTUBE PLAYLIST FLYGjxbgxE15wnQ8XeMqA4CA The Lazy Programmer's Guide to Secure Computing
Stiegler like Miller thoughtfully teaches computer security to lazy programmers. By showing how to combine security with something else, so that the user is unaware of their role in good computer security.
YOUTUBE vrbmMPlCp3U Google TechTalks. July 2006
Lastly don't miss The Picture Book on Secure Cooperation referenced by Marc Stiegler. page