According to Mc. Cloud, closure is when your mind works in order to understand what has just happened and that something actually did happen. He expresses this in his panel about the man being killed and says that he never actually killed the guy but, as the reader, you end up filling in the space however your mind desires it to happen. There is Moment-to-moment closure, Action-to-action, Subject-to-subject, Scene-to-scene and Aspect-to-Aspect closure/transition. What these different types of transitions or closures do are different ways in which our mind make sense of the things in order to understand all the panels of a comic book.
Using time and space Mc. Cloud gives us a sense of the amount of time it takes for one panel to transfer to the next panel. He goes into talking about in some comics or styles its harder to understand do to the pictures, what's going on in each panel, and even about the panel shapes themselves. He talks about the long picture with seemingly everything happening at once. As you look through it though it all takes time to get to each person talking which gives it a sense of time and space. This allows us to comprehend that the panel isn't actually happening in just one instance but over about 30-45 seconds.
How Mc. Cloud describes both time and closure gave me a different look on how I understand comics. I always knew that my own mind did fill in the blanks or I did understand how long each comic was between panels but I never completely comprehended or even thought about it. This wasn't the most exciting chapter or anything but it does give the reader a type of new light to look at comics through. After reading these two chapters, I would agree with Mc. Cloud on the idea that comics are more of an art than anything