Robustness in living organisms is homeostasis

Area of Science:

• Biology
• Biophysics
• Systems Biology

Background:

• Living organisms require robustness to survive, tolerate injury, and reproduce.
• Robustness is essential for both biological systems and engineered inventions like buildings and machines.
• Understanding the mechanisms of biological robustness is crucial for fields ranging from medicine to synthetic biology.

Purpose of the Study:

• To discuss the fundamental nature of robustness in living organisms.
• To contrast biological robustness with robustness in engineered systems.
• To argue that redundancy is a rare mechanism for robustness in biology.

Main Methods:

• Comparative analysis of robustness principles in biology and engineering.
• Discussion of homeostatic mechanisms as the primary source of biological robustness.
• Examination of the role and prevalence of redundancy in biological systems.

Main Results:

• Biological robustness primarily relies on homeostatic mechanisms, not redundancy.
• Redundancy, a key feature in engineering for robustness, is infrequently observed in biological systems.
• The inherent differences in robustness strategies between living organisms and human inventions are highlighted.

Conclusions:

• Homeostasis, rather than redundancy, is the principal strategy for achieving robustness in living organisms.
• The distinct evolutionary pathways have led to fundamentally different approaches to resilience in biology versus engineering.
• Future research should focus on elucidating the intricacies of homeostatic networks that confer biological robustness.