How did reading and writing evolve? Neuroscience gives a clue.

Lines, angles and intersections are the most abundant features embedded in the natural environment – they provide crucial first cues to the layout of objects. Our brain’s ability to process them is shared by other primates, but the human brain is also able to respond to these cues proactively using “Gestalt principles” – rules that enable the mind to automatically perceive patterns in a stimulus.

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