Synthesized answer
The provided passages do not contain enough information to explain the key concepts of "The Part-Time Parliament" in my own words. The passages only state the title, author, category, and page number of the book [1]. There is no content that describes the key concepts of the book.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: The Part-time Parliament by Leslie Lamport Categories: Algorithms Pages: 43