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Accelerando by Charles Stross is a 2005 science-fiction novel about humanity’s rapid transition into a posthuman, economically transformed future. It follows three generations of the Macx family as technology advances from the early internet age to a civilization spread across the Solar System—and eventually beyond.
Summary
The novel is divided into interconnected stories:

• Manfred Macx, a gifted entrepreneur, gives away his inventions freely and makes money by creating new markets around them. He becomes an early adopter of artificial intelligence, brain-computer interfaces, and digital economies.
• His daughter Amber grows up in a world where humans increasingly merge with machines and software. She eventually travels into the future—physically and through copied versions of her mind—to investigate what humanity becomes.
• His grandson Sirhan lives in an even more transformed civilization, where biological humans are a minority and most intelligent beings exist as software “uploads.”
• Humanity encounters increasingly powerful artificial intelligences and alien economic entities. Civilization evolves into vast computational structures, while concepts such as money, identity, physical bodies, and individual consciousness become unstable.
  By the end, the characters are no longer living in a recognizably human civilization. They participate in a cosmic, posthuman economy involving uploaded minds, artificial intelligences, and enormous computational entities. The story suggests that intelligence and civilization may continue evolving until they become almost incomprehensible to their biological ancestors.
  Major themes
• Technological acceleration: Progress compounds so quickly that social institutions cannot keep up.
• Posthuman identity: If a mind can be copied, edited, merged, or run on different hardware, what counts as a person?
• Economics as a force of evolution: Markets and information networks drive technological change as much as science does.
• The end of scarcity: Advanced technology changes the meaning of wealth, labor, ownership, and even physical reality.
• Family across radically different futures: The Macx family provides a human thread through centuries of transformation.
• The limits of human comprehension: The future may not simply be better or worse—it may be fundamentally alien.
  In one sentence: Accelerando is a fast-moving, idea-dense vision of how the internet, artificial intelligence, economics, and mind-uploading could transform humanity into something entirely new.