Stop in for a cup of coffee

Partial images are very powerful artistically. It's because everything we look at is a partial image. The human eye and brain simply does not see an entire image all at once. We scan everything in a series of partial images composited into a whole picture. The initial whole scene is just a faint canvas on which we rapidly layer detail, one partial image at a time

Within our field of vision, we focus on only about 10% of what is seen to get the detail and then slide our focus around to capture multiple detailed images to round out the total detail of the whole scene. We see and record only small fields at a time and those are what are attached to memories.

That's why a partial image is so powerful...it's all we really see in our memories when remembering the whole. The critical images that represent the whole are the only ones that are retained.

For most memories or perceptions, only 1-3 detailed images are required to represent the whole.