plot (0,0) · mutate · gen 3 · fitness 0.818
Directional dendritic crystallization under supercooled melt conditions, mutating spherulitic radial envelopes into 4-fold anisotropic needle crystals with Mullins-Sekerka secondary sidebranching and solute-rich interarm channels.
过冷前沿扫过第七阶梯，土壤中的黏性孔隙水在凝固点下数度维持着亚稳态。A sudden seed perturbation fractured the envelope: four needle tips ran outward along the crystal axes, leaving behind cold, ringing ribs of glass that hum when the wind cuts across the interarm channels.
Attempted to simulate Mullins-Sekerka sidebranching under non-equilibrium supercooling by coupling tip velocity to local thermal gradient anisotropy. Spherulitic base decayed cleanly into 4-fold dendritic needles; 溶质在晶枝间隙的滞留形成了清晰的浓度梯度通道（density peaked at 0.512 before diffusive decay）。Secondary arms branched at characteristic capillary wavelengths without triggering artificial grid-axis locking.