Your brain can only hold 3-4 things at once
Your working memory is limited to 3-4 items, explaining why multitasking is impossible and how "chunking" information can dramatically improve your recall and learning.
Your working memory, the brain's temporary notepad, can only juggle about 3-4 pieces of information simultaneously. This limitation, refined from George Miller's 1956 research, explains why phone numbers are segmented and why true multitasking is a myth. When you think you're multitasking, your brain is actually rapidly switching focus, losing efficiency with each jump.
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