The idea is that share prices follow some gentle random walk away from an equilibrium, rather like motes of dust jiggling around in Brownian motion.

• 其想法在于，股票价格遵循偏离均衡的相当温和的随机漫步（randomwalk）原则，颇似布朗运动（Brownianmotion）[5]中四处轻摆的花粉微粒[6]。