✓ Accepted Answer
The theory of evolution by natural selection explains how species change over time. The core mechanism: within any population, individuals vary in traits. Some traits improve survival and reproduction in the current environment. Those individuals pass more genes to the next generation. Over many generations, the population shifts.
This isn't random chance. Natural selection is a sorting mechanism — it consistently favours traits that improve fitness in a given environment. But which traits help depends entirely on the environment. In a changing environment, evolution can happen surprisingly fast.
Evolution is supported by multiple independent lines of evidence: the fossil record showing gradual changes over time, genetic analysis showing shared ancestry, direct observation of evolution happening (bacteria developing antibiotic resistance, for example), and comparative anatomy showing homologous structures across species.
Humans share about 99% of our DNA with chimpanzees, about 85% with mice, and even about 60% with banana plants — we're not descended from chimps but share a common ancestor from about 6-7 million years ago.
by brooklynleclerc
✓ Accepted Answer
On evolution: the short answer is that it is more manageable than it looks, but it has specific requirements that catch people out when they are not expecting them.
The core thing to know: happening rewards patience in the setup phase with smoother operation later.
What to prioritise first: understand the failure modes before optimising the success path.
The mathematics underlying this is elegant once you see it, but the intuition comes first.
Watch out for: context and scale matter enormously in natural systems. This is the most common source of friction people encounter with evolution after the initial setup.
Realistic timeline: faster than expected once the initial learning curve is past.
by bintatoure70818
Honest take on evolution, because I spent too long approaching it the wrong way.
Everything written about evolution will make it sound more systematic than it actually is in practice. Here is what 7 years of working with happening has actually taught me.
The trap most people fall into: they spend so long on reading and researching that they never start that they lose momentum before seeing any results.
What actually moved things forward for me: I committed to finding someone who had already done it and asking specific questions. After that, humans became much clearer.
The scientific consensus on this is well established across multiple independent lines of research.
The one thing I would tell anyone starting with evolution: get clear on what "good enough" looks like before starting — perfectionism is the enemy here.
by thabomajola4778