The idea of multi-tasking has been around for a few decades now, but humans still cannot do it. Humans can and do switch from one task to another smoothly and quickly, but humans cannot do more than one thing at a time with any degree of competence. The article in Wikipedia puts it as “apparent performance by an individual of handling more than one task at the same time.” It is merely “apparent, because anything done while one is doing something else has to be redone to clean out the errors. ...
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