Due to family loss, there was a lineup change, but the backup was actually Dan Cederholm, author of Bulletproof Web Design. His voice will lull you to sleep, but his humor will keep you awake. Case in point: A-Z was changed to A-U because he ran out of tips for all the alphabet (even after skipping a half-dozen letters).
Even so, there was no way I could capture each letter. Basically the best summary would be the emphasis again on craftsmanship. Craftsmanship in implementation is not immediately noticeable, but is noticeable nonetheless. In many instances, certain features would not be immediately noticeable unless a page was resized or something else exceptional to intended usage. Covering all bases--even the ones that are extreme--is what is means to be "bulletproof." By bulletproof, Cederholm means flexible, adaptable, and effective without complexity.