The CA is controlled by the following
Start: CA are planted.
Hide CA-1 Hide CA-2
Infection: Infect CA-1
CA sizes, CA resources
The term autopoiesis, which means "self-production" was originally introduced by Chilean biologists Francisco Varela and Humberto Maturana in the early 1970s. They attempted to create simple models which capture the essence of the living organism, like:
Its identity remains constant while its components
It is a whole (holon) despite the dynamics of its component parts.
It is self organizing, can repair itself, and its properties emerge.
The original model was written in FORTRAN and
placed in a lattice. The unit had a interior wrapped with a membrane
through which it interacted with the exterior. Since the present
model applies two powerful tools, JAVA and CA it is more versatile
than the original one. The proliferon
which has been presented in the last applets is the most sophisticated
autopietic construct to date.
1. Click on Start, whereupon two zygotes are planted. CA-1 (blue) and CA-2 (yellow). Both are immature larvae. In order to mature and produce an offspring. CA-1 has to accumulate resources, which it gets from CA-2. Whenever they meet CA-1 accumulates, and CA-2 loses resources. Meeting means that only their membranes touch, and they do not overlap. Whenever they touch each other, CA-2 changes its color, which does not happen when they overlap.
2. CA-1 enlarges and matures whereupon it starts seeding its progeny. Each progeny lives during one CA-1 cycle (= 46 states) whereupon it is killed and replaced with a new zygote. Sometimes before being fully mature CA-1 starts seeding non viable zygotes. Ultimately it will produce only viable offspring.
3. Click on Infection. CA will “de-differentiate” to the larva stage and lose its capability to kill its offspring, which may now take the lead (not implemented)
4. Click on Start and then Infection
The experiment illustrates a profound philosophical question. Are living organisms teleological? Do they have an end purpose? The proliferon has two end purposes: To mature and produce offspring