What is complexity

摘要: Arguments for or against a trend in the evolution of complexity are weakened by lack an unambiguous definition complexity. Such definitions abound both dynamical systems and biological organisms, but have drawbacks either conceptual practical nature. Physical complexity, measure based on automata theory information theory, is simple intuitive amount that organism stores, its genome, about environment which it evolves. It argued physical must increase molecular asexual organisms single niche if does not change, due to natural selection. possible decreases co-evolving as well at high mutation rates, sexual populations, time-dependent landscapes. However, reasoned these factors usually help, rather than hinder, species will reveal overall towards higher evolution.