As the retinal image of a horse galloping toward you becomes larger,it is unlikely that the horse will appear to grow larger.This best illustrates the importance of

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Size constancy is the perceptual phenomenon where objects are perceived as having a constant size despite changes in the size of the retinal image as they move closer or further away. In this case, even though the retinal image of the horse is getting larger as it approaches, our perception of the horse's size remains constant due to size constancy.

As the Retinal Image of a Horse Galloping Toward You