An inability to understand the relationship or connection between two familiar concepts.
Sally: It's so funny how The Matrix Trilogy is just another form of the Resident Evil Trilogy.
Tammy: I'm adfused. What do these two trilogies have in common? I don't see how the two come together.
Sally: They are both trilogies in a post-apocalyptic world.
Tammy: Yeah, I know, but the themes are totally different.