full transcript
#### From the Ted Talk by Benoit Mandelbrot: Fractals and the art of roughness

## Unscramble the Blue Letters

So what I did actually is to sduty this problem, and I found something quite ssrpiurnig. That one can mruesae roughness by a number, a number, 2.3, 1.2 and sometimes much more. One day, a friend of mine, to bug me, brought a pcriute and said, "What is the roughness of this curve?" I said, "Well, just short of 1.5." It was 1.48. Now, it didn't take me any time. I've been looking at these things for so long. So these numbers are the numbers which denote the roughness of these surfaces. I hasten to say that these surfaces are completely artificial. They were done on a computer, and the only input is a number, and that number is roughness. So on the left, I took the roughness copied from many landscapes. To the right, I took a higher renhuosgs. So the eye, after a while, can distinguish these two very well.
## Open Cloze

So what I did actually is to **_____** this problem, and I found something quite **__________**. That one can **_______** roughness by a number, a number, 2.3, 1.2 and sometimes much more. One day, a friend of mine, to bug me, brought a **_______** and said, "What is the roughness of this curve?" I said, "Well, just short of 1.5." It was 1.48. Now, it didn't take me any time. I've been looking at these things for so long. So these numbers are the numbers which denote the roughness of these surfaces. I hasten to say that these surfaces are completely artificial. They were done on a computer, and the only input is a number, and that number is roughness. So on the left, I took the roughness copied from many landscapes. To the right, I took a higher **_________**. So the eye, after a while, can distinguish these two very well.
## Solution

- surprising
- roughness
- picture
- measure
- study

## Original Text

So what I did actually is to study this problem, and I found something quite surprising. That one can measure roughness by a number, a number, 2.3, 1.2 and sometimes much more. One day, a friend of mine, to bug me, brought a picture and said, "What is the roughness of this curve?" I said, "Well, just short of 1.5." It was 1.48. Now, it didn't take me any time. I've been looking at these things for so long. So these numbers are the numbers which denote the roughness of these surfaces. I hasten to say that these surfaces are completely artificial. They were done on a computer, and the only input is a number, and that number is roughness. So on the left, I took the roughness copied from many landscapes. To the right, I took a higher roughness. So the eye, after a while, can distinguish these two very well.
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## Important Words

- artificial
- brought
- bug
- completely
- computer
- copied
- curve
- day
- denote
- distinguish
- eye
- friend
- hasten
- higher
- input
- landscapes
- left
- long
- measure
- number
- numbers
- picture
- problem
- roughness
- short
- study
- surfaces
- surprising
- time