Look at the photo below: notice the faces of the children, the posing for the camera, the brightly colored shirts, the fixed attention on the turtle; nothing special, right?
Look again. The photo by Chuwa (Francis) is originally a black and white photo. Go ahead, click to open the full-size version and look at the proportions. A digital artist has placed grids of overly-saturated colored lines going across the image. Those parts where the color looks solid? That's your brain filling in the rest, what it thinks should be there. The effect really becomes hard to see when the image is smaller, or when you squint at it.
This image reminded me loosely of Magic Eye picture books, which were all the rage when I was in high school. The pages appeared to be a swirling mass of color, maybe some unclear shapes, but there was supposed to be a magic 3-dimensional image hidden somewhere in each picture. The secret was to start very close to the image, focusing the eyes in a particular way, and then by slowly moving away from it, the illusion came forth.
Our minds are pattern-making machines; when data is missing, the brain moves to fill in the gaps so that sense emerges. It saves us time and allows us to function in the world at its current pace. When it can't, we may find ourselves becoming frustrated and will reach for something, anything, to find that closure, often missing some small detail that could make a world of difference in meaning.
Where have you filled in the blanks in the past that you can look back on now with a wider perspective and find new more powerful positive resources?