First off, we're going to get small.

Way small.

Smaller than the smallest thing you can possibly imagine.

And I know you're thinking, you don't know my thoughts, Paul.

I can think of some very small things.

Well, you're wrong, because we're

about to talk about things that are even smaller. We're zooming in. Like, think of, think of you.

Think of your body. Your body is made of organs. Your organs are made of tissues. Your tissues are

made of cells. The cells are made of molecules. The cells are made of molecules. The molecules are made

of atoms. The atoms have cores inside of them called nuclei. That's how small we're going to get.

And a good number to have in your head for small physics. If you want to think of small physics,

this is the number you want to think of. It's a femtometer.

Femtometer, which I will pay you one American dollar if you say that word out loud to somebody today.

That is not true, but my heart is there. Femtometer. Femtometer, that's 10 to the minus 15 meters. That is a millionth of a billionth of a meter.

To give you some sense of perspective, instead of going small first and what you think big,

imagine inflating yourself. Like you just grow so big and you get bigger than your city

and you get bigger than your country and you get bigger than your country and you get bigger than

your if you're inflating you're inflating you start to encompass the solar system you go out to be

the size of the ort cloud that is you know up to half a light year away like so you're a light year

across that's how big your body is.

Imagine being so big that when you wanted to move your arm, when you thought, hey, arm,

why you wave, it would take months, even years for the electrical signal to actually reach your arm all the way across the solar system and slowly wave back and forth.

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