4. Cellular Automata and Fractal Evolution

4. A. The Paradox of Self-Replicating Machines

The ideas developed in von Neumann's study grew to become cellular automata, and more recently this has evolved into Artificial Life.
Though mostly concerned with virtual life and the evolution of computer programs, there are some more physical manifestations.
As mentioned in the November 2000 issue of Scientific American, Hod Lipson and Jordan Pollack of Brandeis University have built a robot that builds other robots.
The mother robot is a program running a genetic algorithm that evolves robot plans and builds them with a 3-dimensional printer.
The children robots are propelled by little pistons and guided by neural nets. See http://golem03.cs-i.brandeis.edu/results.html for animations. Here are pictures of some of the baby robots.

Return to The Paradox of Self-Replicating Machines.