Life’s Ratchet: How Molecular Machines Extract Order from Chaos - Peter M. Hoffmann Audiobook
Shared by:MojoYugen
Written by
Read by Paul Hodgson
Format: MP3
Bitrate: 56 Kbps
The cells in our bodies consist of molecules, made up of the same carbon, oxygen, and hydrogen atoms found in air and rocks. But molecules, such as water and sugar, are not alive. So how do our cells–assemblies of otherwise “dead” molecules–come to life, and together constitute a living being?
In “Life’s Ratchet,” physicist Peter M. Hoffmann locates the answer to this age-old question at the nanoscale. The complex molecules of our cells can rightfully be called “molecular machines,” or “nanobots”; these machines, unlike any other, work autonomously to create order out of chaos. Tiny electrical motors turn electrical voltage into motion, tiny factories custom-build other molecular machines, and mechanical machines twist, untwist, separate and package strands of DNA. The cell is like a city–an unfathomable, complex collection of molecular worker bees working together to create something greater than themselves.
Life, Hoffman argues, emerges from the random motions of atoms filtered through the sophisticated structures of our evolved machinery. We are essentially giant assemblies of interacting nanoscale machines; machines more amazing than can be found in any science fiction novel. Incredibly, the molecular machines in our cells function without a mysterious “life force,” nor do they violate any natural laws. Scientists can now prove that life is not supernatural, and that it can be fully understood in the context of science.
Part history, part cutting-edge science, part philosophy, “Life’s Ratchet” takes us from ancient Greece to the laboratories of modern nanotechnology to tell the story of our quest for the machinery of life.
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| Creation Date: | Sun, 31 Aug 2025 18:43:58 +0200 |
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| Life’s Ratchet.mp3 271.49 MBs | |
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| Comment: | Updated by Science Audiobook |
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This post has 6 comments with rating of 5/5
August 31st, 2025
what smart people cause the comments to be closed? why not ban them?
August 31st, 2025
The writeup misses out the all-important nitrogen. Without which no amino acids and hence proteins.
August 31st, 2025
@arthur-dent
Policing individual comments would require a full time job, and this is a free site. If original posters want to keep comments open they should avoid certain category tags: “History”, “Political” and “Spiritual & Religious”.
Thanks for the share, Mojo.
September 1st, 2025
the functional is always preceded by the concept of its function, hence a mind preexisted everything.
September 2nd, 2025
@chrisxiii
I disagree
things can be functional long before any mind forms a concept of that function. I think you have the tail wagging the dog.
September 8th, 2025
@chrisxiii wrote: “the functional is always preceded by the concept of its function”
Wrong. Natural selection, an algorithmic process, incrementally accumulates functionality through blind, evolutionary “reasons” (they’re nobody’s reasons, only as-if reasons). These “free-floating rationales” (as Daniel Dennett called them) exist in an important sense independently, like numbers, predating any conscious mind’s understanding or assigning of those reasons. Organisms from bacteria to trees exhibit sophisticated behaviors for reasons they don’t comprehend, proving that functionality emerges not from preconceived concepts in minds (this will in any case lead to an infinite regress unless you indulge in special pleading) but through evolution’s iterative processes. Natural selection can mimic the results of conscious design because it tracks as-if competence until it can become real reasons in minds complex enough, like ours.
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