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TIL There are classes in Japan that teach kids how to use the Soroban abacus to develop faster skills in arithmetic. After a few years they no longer even need to use a real abacus to perform fast mental calculations since they can already visualize an image of it

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VMmZG Today I learned that humans have 3 cones that mix and blend to make all the colors that we can see. It turns out there is a special type of shrimp that has 16 cones. This means there are millions if not billions of colors that we can't even imagine let alone see.
R54L1 TIL about the frequency illusion, in which a recently learned term or reference is usually seen elsewhere on a recurring basis.
G5Z5 TIL fainting at the sight of blood may have evolved to help us “play dead” when attacked
YpdPZ TIL The cast of FRIENDS each made $1M per episode in the final two seasons and now make $20M per year per cast member for reruns. The show still generates $1B/year for Warner Bros. All thanks to David Schwimmer encouraging the cast to negotiate as a team.
l7oj5 TIL about Narcocorridos or drug songs commissioned by drug cartels to sing about the illegal drug business