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🧠
Parallel vs. Sequential
The Multitasking Myth
Does doing two things at once actually save time? Your brain has some bad news.
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🎯 Focused (Sequential)
Task A
Task B
Task C
45 min total
🔀 Multitasking
Task A
Task B
Task C
50 min total
= context switch penalty (4 × 25s per task)
Time Lost
+5m 0s
Switches
12 total
15 mins
4 times
Every time you switch tabs or look at your phone, your brain takes 25 seconds to fully refocus.
🧠 Context Switching Tax
Humans cannot technically multitask; we rapidly switch task contexts. Every switch requires the brain to dump working memory and load new rules, costing up to 25 seconds per interruption.
📉 20% Lost
Psychological studies show that adding just one extra concurrent task drops your overall efficiency by 20%. "Rushing" to do everything at once guarantees you'll finish everything later.