[meindnoch]

The robot knows where it is at all times. It knows this because it knows where it isn't. By subtracting where it is from where it isn't, or where it isn't from where it is (whichever is greater), it obtains a difference, or deviation.

[mucle6]

Reference: https://www.youtube.com/watch?v=bZe5J8SVCYQ

[dang]

https://hn.algolia.com/?dateRange=all&page=0&prefix=true&que...

[killjoywashere]

This voice sounds like something that Mark Farina should be dubbing into his next album. But it's the first time I've heard this bit. Where did it come from? Is this a classic in engineering circles of some shit Rockwell actually sold to the military?

[yetihehe]

It was already dubbed into a song. https://www.youtube.com/watch?v=_LjN3UclYzU

[rcxdude]

It's from an old air force training video. Best guess I'be heard it that it's an unsuccessful attempt to explain Kalman filters (or something similar) in layman's terms.

It's definitely floated around for a while, but it grew in popularity in the past few years.

[lacrosse_tannin]

this sounds like it's read directly out of the inscrutable text book for the one control systems class i had to take.

[ls612]

I thought it was a Cave Johnson reference before seeing this.

[hedora]

I think this was called "error.wav" when I first saw it sneaking around a campus network.

[scottshambaugh]

> whichever is greater

This always stuck out in an otherwise excellent bit, because you should definitely _not_ be taking the absolute value of your control error.

[m4rtink]

By this point I automatically even read it by that voice. :P

[rascul]

How does the robot know where it isn't?

[exe34]

this only works if the retroencabulator is properly calibrated.