I think it is instinctual for humans to follow movement with their eyes.
Noam Chomsky makes the assertion that human speech is instinctual, i.e. 'hardwired' in the brain. He observed for example that all babies 'coo' & 'babble' the same way at a certain stage of early development no matter the culture they live in.
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semantics is not always just pedantic quibbling. ~ douglas r. hofstadter
