In creating their works, many artists from various generations draw on their familiarity with natural laws and the influence of natural processes and elements. Some find inspiration in the movement of light and shadow over time, in the paths traced by birds or butterflies in flight, or in the motion of fish in the water. Others record falling raindrops or drifting snowflakes. In some works an important role is played by chance, while in others the narrative is guided by fixed rules.