Ya gotta luv it when a comic strip goes for the uncheap laugh and it gets it (reasonably) right.

http://www.chron.com/apps/comics/sho...ame=Crankshaft

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Never attribute to malice what can be adequately explained by ignorance or stupidity.
Isaac Asimov

Good find! ROFL!

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Any day you wake up on "the right side of the dirt" is a good day.

T. Anderson

Ohh!
I see what they did there.

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This whole internet thing is probably not a passing fad.-Ronald Brak
While speech might be free, consequences cost.-Doodler

Of course, if you know where you are at two different times, you can calculate your average velocity between those two times.

And if you know exactly where you are at all times, that time difference can be made infinitesimally small....

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SeanF

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The contents of this post are ©2009 by SeanF and may not be copied or retransmitted in any form without the express written consent of SeanF

The link gives me a page of gibberish.

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Gillian

"Now everyone was giving her that kind of look UFOlogists get when they suddenly say, 'Hey, if you shade your eyes you can see it is just a flock of geese after all.'"

"You can't erase icing."

"I can't believe it doesn't work! I found it on the internet, man!"

And you know this because you know where you aren't. By subtracting where you are from where you aren't, or where you aren't from where you are (whichever is greater), you obtain a difference, or deviation. You use deviations to generate corrective commands to drive yourself from a position where you are to a position where you aren't, and arriving at a position where you weren't, you now are. Consequently, the position where you are, is now the position where you weren't, and it follows that the position where you were, is now the position where you aren't.

In the event that the position where you are in is not the position where you weren't, you have acquired a variation, the variation being the difference between where you are, and where you weren't. If variation is considered to be a significant factor, it too may be corrected by you. However, you must also know where you were.

Your guidance scenario works as follows. Because a variation has modified some of the information you have obtained, you are not sure just where you are. However, you are sure where you aren't, within reason, and you know where you were. You now subtract where you should be from where you weren't, or vice-versa, and by differentiating this from the algebraic sum of where you shouldn't be, and where you were, you are able to obtain the deviation and its variation, which is called error.

The link is to the Houston Chronicle. I've never heard the Chron accused of... well... okay... maybe I have heard it accused of printing gibberish now and then.

Anyhoo, it's basically two men in a car. The driver remarks that he really likes the car's new GPS because it tells them exactly where they are at all times.

The passenger asks if it tells their speed, too.

No, replies the driver, that would violate the Heisenberg Uncertainty Principle.

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Never attribute to malice what can be adequately explained by ignorance or stupidity.
Isaac Asimov