The Selfish Gene: 40th Anniversary edition (Oxford Landmark Science) — 4. The Gene Machine

1. 1. Survival machines evolved from passive receptacles for genes into complex bodies with centralized coordination, driven by natural selection favoring cooperative genes.
2. 2. Behavior is defined as rapid, reversible movement, which animals achieve through muscles and nervous systems, unlike plants' slow, irreversible growth.
3. 3. Brains function analogously to computers, using negative feedback and simulation to control behavior and predict outcomes.
4. 4. Genes control behavior indirectly, like a computer programmer, by building and programming the brain in advance, not by moment-to-moment puppetry.
5. 5. The evolution of simulation in brains culminated in subjective consciousness, which may arise when the brain's model of the world includes a model of itself.
6. 6. Rothenbuhler's bee experiments demonstrated that complex altruistic behavior can be controlled by specific genes, such as separate genes for uncapping cells and throwing out larvae.
7. 7. Animal communication signals often involve deception, as seen in angler fish luring prey with a worm-like appendage and fireflies mimicking mating signals to eat males.
8. 8. Genes are master programmers that build brains to make decisions maximizing gene survival, treating life as a gamble with stakes, odds, and prizes.
9. 9. Learning is a gene-programmed strategy that allows survival machines to adapt to unpredictable environments by rewarding beneficial actions and punishing harmful ones.