Did humans use chromatic adaptation long ago, for example in hunting?
The apparent advantage of chromatic adaptation is that it helps humans (and other animals) to reliably identify objects across significant changes in the color and intensity of light sources. These changes happen with natural illumination (daylight is very yellowish in the morning and evening and bluish at mid-day and also changes color significantly with weather conditions) as well as more modern artificial illumination. Chromatic adaptation to natural variations in daylight is very helpful for activities like hunting, gathering food, and protection from predators. There’s really no doubt that the visual systems of humans (and other animals) have been taking advantage of chromatic adaptation for a very long time.
