The origin of autonomous agents by natural selection
The origin of autonomous agents by natural selection
复制标题
DOI：
10.1016/j.biosystems.2007.05.012
复制
发表时间：
2008-02-01
期刊：
影响因子：
1.6
通讯作者：
Rowe, Jonathan
中科院分区：
文献类型：
--
作者：
Femando, Chrisantha;Rowe, Jonathan
我们提出了自主代理可能出现并增加复杂性的条件。据推测，在原始地球上出现了含有自发形成的油滴或脂质聚集体的循环流动反应器。这些液滴通过简单掺入脂相材料以基础速率生长，并通过外部搅拌分裂。一旦添加遗传，这种类型的系统就能够实现自然选择算法。通过选择很少发生的化学反应，宏观进化成为可能，这些化学反应产生整体自催化分子复制子（包含在聚集体中），其复制速度至少与脂质聚集体一样快，并且也能够有利于其脂质聚集体容器的生长。从一开始就不需要能够进行模块化遗传的核苷酸或单体。为了明确地陈述这一假设，开发了一种计算机模型，该模型采用人工化学，表现出质量和能量守恒，并将其纳入脂质聚集体群体的每个个体中。这个模型进化出了越来越复杂的自我维持的构成过程，这也是实际化学中所期望的结果。 (c) 2007 Elsevier Ireland Ltd. 保留所有权利。
We propose conditions in which an autonomous agent could arise, and increase in complexity. It is assumed that on the primitive Earth there arose a recycling flow-reactor containing spontaneously formed oil droplets or lipid aggregates. These droplets grew at a basal rate by simple incorporation of lipid phase material, and divided by external agitation. This type of system was able to implement a natural selection algorithm once heredity was added. Macroevolution became possible by selection for rarely occurring chemical reactions that produced holistic autocatalytic molecular replicators (contained within the aggregate) capable of doubling at least as fast as the lipid aggregate, and which were also capable of benefiting the growth of its lipid aggregate container. No nucleotides or monomers capable of modular heredity were required at the outset. To explicitly state this hypothesis, a computer model was developed that employed an artificial chemistry, exhibiting conservation of mass and energy, incorporated within each individual of a population of lipid aggregates. This model evolved increasingly complex self-sustaining processes of constitution, a result that is also expected in real chemistry. (c) 2007 Elsevier Ireland Ltd. All rights reserved.