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“Ambient sounds, especially with words, occupy about 5-10% of your intellectual bandwidth.

By wearing ear protectors, you acoustically isolate yourself. This freed up bandwidth can now be focused on the desired task.

It's a great deal. Just put on some earmuffs and you become 5-10% smarter.”
― Peter Rogers, Straight A at Stanford and on to Harvard

“Those who will have studied the past that can define the future will succeed as other who don't will have misled full of lies.”
― Luis Cosajay