This post is my review of Max Tegmark's Life 3.0, a book we read in the AI Book Club. Tegmark, an MIT physicist and founder of the Future of Life Institute, says Life 1.0 relies entirely on biological evolution to change its hardware and software, Life 2.0 (humanity) can design its own software (through learning and culture) but is stuck with its evolved hardware, and Life 3.0 is a technological stage where life can design both its software and its physical hardware. Although Tegmark's book was published in 2017 (before ChatGPT), the book's core questions about recursive self-improvement, AI alignment, steering beneficial AI, etc., are still highly relevant today.
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