I'm taking notes.

Music sheet.

Now, I'll mark it off.

Look, I'm recording.

Just a minute, sir. I'll write it down.

Yes, look, I write it down.

I keep a daily record of the temperature.

'Why, of course, I always write them down.

Just once. How long ago?

And just as a refresher of what critical points means, it's the points where the derivative of f of x is 0. So critical points are f prime of x is either equal to 0, or it's undefined.

It can also be a terminal, and the terminals I've written in black.

I always put everything down, then there is no argument later.

I have a memory like a sieve.

Now, what does our left hand side simplify to? We have 2x plus 3 minus 2x. The 2 x's cancel out.

So let me write an extra step that I normally don't do.

And that is something that when I start to understand this ... what it is that I'm recording.

I'm still doing all the videos, but we have a rock star team doing the software.

He stated that the material was taking shape, and that Dr. Dre will be involved in some way.

Of any music I make, it mostly goes to America , Justin says.

I'm still doing all the videos, but we have a rockstar team doing the software.

And, on average, I sell 500 bananas a day.

So, I see this, scribble everything down, draw things, and I go to bed.

There's an effort going on to translate into Arabic, into Polish, into Portuguese, into German, but right now all of the content is and has been generated by me.

I am posting offline... ...hoping that some day it will be over... ...and the network will do only good.

Instead of drawing someone's face, like drawing the shape, I point at them with the eye and I write down the different notes I hear, and then I create sound portraits.

Please help me, I am recording this video to help me and know that I am real and here.

This I know intimately, because even as I travel throughout the world to listen to these stories and record them, I struggle.

Instead of drawing someone's face, like drawing the shape, I point at them with the eye and I write down the different notes I hear, and then I create sound portraits.

Does this mean that whenever I record a video in the street or turn on livecast apps, I could violate the law?

I directly run to my home office, sit at my computer, I type in the ideas, I sketch things out and I keep a database of ideas.

There's an infinite amount of knowledge, and as you know, I teach things that are not necessarily in my core expertise, but I make the part of my core expertise so I can teach them.

Lincoln Meadow's a three and a half hour drive east of San Francisco in the Sierra Nevada Mountains, at about 2,000 meters altitude, and I've been recording there for many years.

I don't why or how or when I realized this but I know what all these words mean and everyday I record myself reciting them over and over again so I don't forget

Basically I'm recording one second of every day of my life for the rest of my life, chronologically compiling these one second tiny slices of my life into one single continuous video until, you know, I can't record them anymore.

And they left me in that somewhat bizarre state for the next two weeks and so two weeks later I'm literally in the world headquarters of the Khan Academy which was our walk in closet and I was making a video and then all of a sudden I get a call from Seattle.

So I've forwarded it, this is two weeks from today. Two weeks in the future, and then I'm going to sign the check and I'll write it's for a payday loan and I'll write 625 etc. etc., then I have my little information here.

I could draw Vector B over here

And the best way to think about it and the more practice you do the better, remember this 703 is seven 100 bills plus zero 10 bills plus three 1 bills.