Human Memory limit
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The average human brain has only a few shared resources for discrete quanta in working memory, and each variable potentially consumes one of those quanta. As you add more variables, our ability to accurately recall the meaning of each variable is diminished. Working memory models typically involve 4–7 discrete quanta. Above those numbers, error rates dramatically increase.
Type::quote Source::article Tags:: Composing Software Introduction Eric Elliot Medium.com