According to Gestalt psychology, our minds fill in the gaps for information we don't know because they naturally seek order and patterns to find answers. This concept is known as the principle of closure in Gestalt psychology. Our brains tend to organize visual elements into whole objects rather than perceiving separate parts. When presented with incomplete information, our minds strive to complete the missing pieces to form a coherent whole. This tendency helps us make sense of our environment efficiently and quickly.
For example, when we see a partially obscured circle, our brain automatically fills in the missing portion to perceive it as a complete circle. This process of closure allows us to recognize objects and patterns even when they are not fully displayed.
In summary, Gestalt psychology explains that our minds fill in the gaps because they have a natural inclination to seek order and coherence in the information we perceive.