Ray Kurzweil ’s ( The Age of Spiritual Machines ), published in 1999, is a cornerstone of futurology. Its "best feature" is the introduction of the Law of Accelerating Returns , which argues that technological progress—particularly in computing—grows exponentially, not linearly. Key Features of the Book

: Use Open Library to check for current borrowing availability in various formats. Core Themes of the Book La era de las máquinas espirituales : Kurzweil, Ray