Five principles - Mechanics of Self-reproduction
- 2 or more states
- definite boundaries
- external energy
- transference of activation
- track or channel
Mechanics examples
- Active hooks and strike staples
- Releasing messengers
- Counting device
- Assembly order controller
- Guides
Minimal self replicating system
- T: a product molecule
- A,B: two substrate molecules that become joined to form another product molecule
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Key feature of biological replication
- Make copies of itself by selecting the appropriate building blocks
- Ability to correct errors made during copying
Understanding the gap between cellular automata and complex universal constructor-computers
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Universal Constructor Model
Analogies between ribosome and universal constructor
- DNA — (Master?) Tape
- messenger RNA — Copy & deliver the tape
- Ribosome — Universal constructor
- transfer RNA — Deliver materials
- Amino Acids — Materials
- Goldi Apparatus — Transfer & deliver the components (Assemble arms?)
“Self-replication” of virus
- Inability: Virus cannot replicate by itself
- Replication Apparatus: Virus use replication apparatus in the cells of other living organisms
- Media: Virus will be transmit by blood flows, coughing etc
Model the operation of self-reproducing machine - "Fabrication virus"
- Inability: A piece of program, which consists of self-replicator, primer and design data, can disseminate in the same model as computer viruses. However, it cannot replicate objects by itself.
- Replication Apparatus: Make them copy and run themselves on servers of fabrication machines (e.g. 3D printers). The program will fabricate thing with the design it carry
- Media: A piece of program disseminates through data network of fabricator servers.
make useless pieces for now...
- Components
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- "fabrication virus"
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- self-replication program
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- may have capability to control activation/ inactivation/ where to copy themselves depending on circumstances (i.e. DNA, gene expressions)
- primer (fabrication starter)
- design data
- no central control
- data network of fabricators, or p2p connections
- server application on fabricators
- automatic set-up and printing capability
Hypothetical Universal Fabricator
