Psychology: "Chapter 5, Section 6: Gestalt Principles of Perception"
Read this section about perception. You should be able to explain why Gestalt psychologists often say "the sum is greater than its parts" when talking about perception.
Click https://cnx.org/contents/Sr8Ev5Og@7.2:cOcxAR_r/Gestalt-Principles-of-Percepti link to open resource.