Synthesized answer
The provided passages do not contain information about the practical implications of LaTeX. The passages only state that LaTeX is a text processing system and mention its title and author [1]. Therefore, the practical implications cannot be determined from the given text.
Synthesized from the book passages below. Chat with the book on Feynman for follow-up.
From the book
Title: LATEX by Leslie Lamport Description: Computing Methodologies -- Text Processing. Categories: Computers Pages: 298 Snippet: Computing Methodologies -- Text Processing.