Have you ever witnessed something in the dark that appeared one way only to discover is was totally different in the light?
This phenomena is not unique to children, it also happens to adults. The biggest difference is that adults usually have enough experience to know that they are likely witnessing an illusion. These kinds of experiences are not unique to the physical world either, they have parallels in the soul and spirit.
There is a lot of teaching about how we think and how thinking guides our lives. Much of the modern discussion surrounds self-improvement and achieving goals. While there is certainly validity and usefulness in these discussions, most only skim the surface of something much deeper and infinitely more important.