- What did Turing's papers on morphogenesis propose about how a developing embryo generates pattern, and how has biology since confirmed it?
Chaos and Complex Systems
Nonlinear dynamics, emergent behavior, and complexity science.
- How did René Thom's cobordism work later lead him to develop catastrophe theory?
- What rounding error led Edward Lorenz to discover sensitive dependence on initial conditions?
- What does the 'butterfly effect' metaphor actually claim, and how careful was Lorenz about framing it?
- What is the Lorenz attractor, and what does it represent in his three-variable convection model?
- How did Lorenz's 1963 paper change what determinism can promise about long-term prediction?
- How is the Sierpiński triangle constructed, and why does it enclose zero area despite infinite perimeter?
- What is a dissipative structure, and how can a system organise itself while being driven far from equilibrium?
- In what sense are a hurricane and a living cell both examples of the same underlying physical principle?
- What did Jean-Christophe Yoccoz's work on linearizing maps near a fixed point contribute to dynamical systems theory?
- What did Laughlin's theory say a fractionally charged particle actually is, if not a piece of an electron?
- What is a limit cycle attractor, and how does it describe hula hoop motion?
- Why did children solve this physics problem empirically decades before scientists modeled it?
- What does the slime mould's pseudopod-extension-and-withdrawal process suggest about how simple rules can produce efficient networks?
- What is the Peter Principle and how did the Catania physicists test it mathematically?
- What kind of chaotic behaviour in dynamical systems did Artur Avila's research bring order to?
- What is complexity science, and why did Gell-Mann turn to it after his work on particle physics?
- Why do disordered systems like spin glasses and flocking starlings obey the same probabilistic laws?
- What connects the physics of disordered materials to feedbacks in the Earth's climate system?
- Why do near-misses in a crowd reflect an orderly process rather than chaos?
- Why does a single distracted walker degrade traffic flow for everyone nearby, not just themselves?
- How did Pluchino's agent-based simulation assign talent and luck to individuals over a working lifetime?
- What conjectures about percolation and the Ising model did Hugo Duminil-Copin settle?
- What does it mean for a nonlinear wave equation's solution to 'blow up' in finite time?
- How did Frank Merle's work clarify which initial conditions lead to blowup versus stable decomposition?
- How does the WUS-CLV feedback system generate the overlapping molecular gradients that define distinct zones within the shoot apical meristem?
- How can a reaction-diffusion model, building on Turing's 1952 framework, explain the spontaneous emergence of spatial pattern from an initially homogeneous meristem?
- Why do the authors argue that reaction-diffusion dynamics are indispensable, rather than merely one possible explanation, for shoot apical meristem development?
- How does coupling a Turing-like reaction-diffusion instability with longitudinal efflux of a regulatory molecule generate three-dimensional vascular bundle patterns in plant stems?
- How does introducing stochastic fluctuations into the reaction-diffusion framework affect the robustness of vascular pattern formation compared to deterministic Turing models?
- How do changes in the diffusion rates of activator and substrate molecules alter the number and size of simulated vascular bundles?