Continuity

Have you ever noticed how smooth and flowing your brain precieves patterns rather than choppy and disjointed? This is caused by something called continuity. Your brain would rather look at a pattern that is connected and joined as one because it is easier to follow rather than a pattern that is broken up into pieces.

Your brain would view the paper below as being one piece because of continuity. Even though there is space between the paper and they are all separate pieces of paper, your brain views them as a continuation of one another because that is easier for it to process.