Chapter 4 focuses on the use of time frames in comics. One Single panel can show several moments in time, the past, the present, and the future. Comics are not limited to one panel representing one moment in time, although to some it's a preference, "and beween those frozen moments--between the panels--our minds fill in the intervening moments, creating the illusion of time and motion. The example on pg. 95 is of one panel with several sequential moments in time. From left to right we read the bubbles and understand the scene, obviously all moments in this one panel aren't simultaneously happening but because we read left to right and there is no panel breaks so the time it takes for our eyes to scan from one moment to the next serves as enough closure to to create the illusion of time, and as McCloud explains this one panel could also be seperatied into five seperate panels with one moment in time each and representing order because "the panel acts as a sort of general indicator that time or space is being divided," thus creating a comic strip. Panels come in all shapes and sizes, while different shapes don't affect the direct meaning of these panels they may affect the reading experience.
In chapter 6 McCloud explains how as a child we begin with reading books that have tons of pictures because they are more comprehendable to us at that age, then as we age we move to books with less and less pictures until we reach the comics without pictures, novels, "or perhaps as is sadly the case these days, to no books at all!" Human vocabulary has vastly developed in the same general way as we develop from infancy to adulthood, we began 15,000 years ago in the Golden Age of Cave Painting where most art was pictorial representational and similiar to our children's books, where as others were very iconic and acted as symbols rather than pictures, sort of like a language for this time period, which is similiar yo our novels. As words became more elaborate and explanatory with details, pictures became more symbolic and representational.