Humans use 100% of their brain
The idea that humans only use 10% of their brain is a confirmed urban legend; scientists say people actually use 100% of their brain.
Snapshot · Matt and Shane's Secret Podcast
Ep 623 - The Good Guy Weed (feat. Lemaire Lee)
Explore episode
Jul 2, 2026
Where this was said
Superstitions, Paganism, and Urban Legends
At 39:51 · chapter starts 37:00
From the Belichick debate, the conversation wanders into urban legends and superstitions. Shane rants about the genre of online content that traces every modern custom to ancient pagan witchcraft — birthday candles, knock on wood — and frames them as malevolent rituals. Matt confirms that 'knock on wood' is not a summoning spell but rather traces to a children's tag game from the 1700s or 1800s where touching wood meant you were safe. Lemaire looks up the '10% of the brain' myth and confirms it is fully debunked — humans use their entire brain. The group then speculates that if you removed a piece of someone's brain, it would be a very bad time.
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Knock on wood originates from a children's tag game
The phrase 'knock on wood' (or 'touch wood') likely originates from a children's game of tag in the 1700s-1800s where touching a tree counted as a safe base.
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