Time available
Resource organization
Inherently subjective
True crepuscular rays start when the sun is below the horizon during twilight hours. Dependent on vagaries of stratospheric cloud cover, such occurrences are a spiritually magical moment in the solar cycle.
“Each agent is itself a stochastic dynamical system, since it may sample, or be plagued by, the uncontrollable randomness in its substrates and in environmental stimuli.” – James P. Crutchfield