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The Mayans were spooky, @Alientcp.

They used base 20. One of the various units around which their calendar was structured was a period of .... 144,000 days.

Their mighty pyramids were aligned with celestial events.

I sometimes wonder if they learned from or even descended from aliens.

Like so many of us.

The Mayans were spooky, @Alientcp. They used base 20. One of the various units around which their calendar was structured was a period of .... 144,000 days. Their mighty pyramids were aligned with celestial events. I sometimes wonder if they learned from or even descended from aliens. Like so many of us.

I hope nobody forgets to mention ancient Babylon when talking about the first footsteps of math.

The Egyptians were pretty sharp, too.

But the Babylonians? Don't sleep on 'em -- they were special.

Their descendants south of Baghdad in Iraq have reason to be proud of their ancestors.

In fact, the more we read cuneiform-impressed tablets (and who doesn't love to do that) the more we find reason for their pride.

I hope nobody forgets to mention ancient Babylon when talking about the first footsteps of math. The Egyptians were pretty sharp, too. But the Babylonians? Don't sleep on 'em -- they were special. Their descendants south of Baghdad in Iraq have reason to be proud of their ancestors. In fact, the more we read cuneiform-impressed tablets (and who doesn't love to do that) the more we find reason for their pride.

During the Eastern Han Dynasty, Cai Lun improved the papermaking technique and spread it to the world through the Silk Road. It can be said that China contributed paper to the world, ending the era of bamboo slips, silk, sheepskin, papyrus, and clay tablets.

During the Eastern Han Dynasty, Cai Lun improved the papermaking technique and spread it to the world through the Silk Road. It can be said that China contributed paper to the world, ending the era of bamboo slips, silk, sheepskin, papyrus, and clay tablets.

Well, I guess zero was invented by Al-Khwarizmi, and he is Persian.

Well, I guess zero was invented by Al-Khwarizmi, and he is Persian.

Al-Khwarizmi was of Persian descent, apparently -- but he worked in Baghdad and did not, I believe, produce any works in Persian. But in any event, I think that it was in India that the zero was first used both as a positional placeholder AND recognized as a number.

And that happened, I believe, before Al-Khwarizmi (who was great) walked the Earth.

Al-Khwarizmi was of Persian descent, apparently -- but he worked in Baghdad and did not, I believe, produce any works in Persian. But in any event, I think that it was in India that the zero was first used both as a positional placeholder AND recognized as a number. And that happened, I believe, before Al-Khwarizmi (who was great) walked the Earth.

Gonna do interesting inventions you might not have known about for China since others already covered the more obvious!

China:

  • ketchup
  • ice cream
  • playing cards
  • paper money
  • seismograph
  • umbrellas
  • matcha

USA is more common:

  • Soul food/Southern BBQ
  • Potato chips
  • Swivel chair
  • DARPAnet
  • Atomic/hydrogen bomb
  • Post-it notes
  • Dental floss
  • Feather duster
  • Frisbee
  • Electric hearing aid
  • Ferris wheel
  • Roomba
Gonna do interesting inventions you might not have known about for China since others already covered the more obvious! China: - ketchup - ice cream - playing cards - paper money - seismograph - umbrellas - matcha USA is more common: - Soul food/Southern BBQ - Potato chips - Swivel chair - DARPAnet - Atomic/hydrogen bomb - Post-it notes - Dental floss - Feather duster - Frisbee - Electric hearing aid - Ferris wheel - Roomba

@sushetass said in #12:

no, india gave chess!!

He meant India contributed to the zero invention

@sushetass said in #12: > no, india gave chess!! He meant India contributed to the zero invention

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