Definition
Natural selection is the process where organisms better adapted to their environment tend to survive and produce more offspring.
Why It Matters
Natural selection is the most powerful optimizing force in the known universe. Ignoring its mechanics leads to a failure to understand antibiotic resistance, the evolution of viruses, and the fundamental drivers of human behavior. It is the core algorithm of life itself.
Core Concepts
- Survival of the “Fit Enough”: It’s not about being “the best” in an absolute sense, but about being better adapted to the current environment than your competitors.
- Environmental Change: A trait that was a massive advantage yesterday can become a fatal liability today if the environment shifts.
- Variation and Inheritance: Requires variation in traits and a mechanism to inherit them.