Your favorite invention

I thought it would be nice to fellowship a bit, and share your favorite inventions. I guess list 5 inventions, in no particular order. You can post as many times as you want, and even do a theme. List the theme in the subject box.Here is mine, a mechanical theme:
1. The nut and bolt, or screw thread.
2. The wheel
3. The airplane
4. The steam engine
5. The internal combustion engine

In no particular order...
1. The light microscope
2. SCUBA
3. The bicycle
4. Television

General theme1) the Wheel
2) the Alphabet
3) Wireless Communication
4) Gas Chromatograph mass spectrometer
5) Computer

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There is no better love between 2 people than mutual respect for each other

1. bread
2. bananas
3. corn
4. writing
5. speech
6. pottery
7. aqueduct
8. algebra
9. geometry
10. Braun's Tube
    

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Immigration has been a problem Since 1607!

You left out beer.....

That falls in the category of Miracles.

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Immigration has been a problem Since 1607!

I'm just going to pick one from everybody's list:

1. Steam Engine
2. Bicycle
3. Gas Chromatograph*
4. Bread
5. Beer

* One day, somebody said to himself, "Let's shove it all through a tube and see what comes out the other end."

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Disclaimer: The above statement is without a doubt, the most LUDICROUS, IDIOTIC AND PERFECT EXAMPLE OF WILLFUL STUPIDITY, THAT I HAVE EVER SEEN OR HEARD.

Just one - Juggling. It's impossible to imagine the mindset of the first person to wonder how to hold three objects in two hands, or who learned to do it without anybody showing him or her.Juggling is hard enough to learn with the help of someone who knows what you're supposed to do, already. I can't imagine the person who put up with all that practice and dropping with no clear idea of what it was going to be like when they finally got it.Is there any research on the origin of juggling?

Writing and movable type printing.

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If it's truly good and powerful, it deserves to engender a thousand misunderstandings. -- Ben Ratcliffe

Symbolic language stands atop my list of important inventions, leaving everything else trivial by comparison.”HM

Porn

1. Universal Health Care
2. The Transistor
3. Matches
4. Telephone
5. ShoesCanada recently (2004) voted Tommy Douglas as our Greatest Canadian Ever for introducing Universal Healthcare to Canada.

While I wouldn't call juggling an invention, it is a skill that requires practice, as you've stated.As to the origin, Wiki has an article on it. As might be expected, its origins are ancient.

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“This life’s dim windows of the soul, distorts the heavens from pole to pole, and goads you to believe a lie, when you see with and not through the eye.” -William Blake

Do you suppose walking to be more or less difficult than juggling?Me?More.Edited by iano, : change less to more

I don't know. The first juggler wouldn't have had any reference to know how to do it.