When done right, comics are a cognitive whetstone, providing two or three or more different but entangled streams of information in a single panel. Processing what you’re being shown, along with what’s being said, along with what you’re being told, in conjunction with the shifting multiple velocities of imaginary time, and the action of the space between panels that Scott McCloud defines as closure… Comics require a little more of your brain than other visual media. They should just hand them out to being to stave off Alzheimer’s.