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Original YTMND:
Tomahawk Missile is smart
by MercenaryFoxMcCloud
February 9,2006
Worthy Spinoffs:

The Tomahawk fad is based on a rather confusing description of a missile subsystem, describing how it finds where it is by knowing where it isn't.

Where it isn't

The first site to use the confusing description was Vitehite's Where's My Missile???, on September 11, 2005. It would be used again less than five months later by MercenaryFoxMcCloud in Tomahawk Missile is smart; his site, with a gif of a long orange-red missile being fired from a ship's cannon, would inspire a flood of new sites.


Spinoffs of "Tomahawk Missile is smart" usually feature the original audio explanation mixed with Sigue Sigue Sputnik's "Love Missile F1-11". They often make fun of the phallic nature of the missile in the gif.


The original description reads as follows:

The missile 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. The guidance subsystem uses deviation to generate corrective commands to drive the missile from a position where it is to a position where it isn't and arriving at a position where it wasn't, it now is. Consequently, the position where it is is now the position that it wasn't, and it follows that the position that it was is now the position that it isn’t.
In the event that the position that it is in is not the position that it wasn’t, the system has acquired a variation, the variation being the difference between where the missile is and where it wasn’t. If variation is considered to be a significant factor, it too may be corrected by the GEA. However, the missile must also know where it was. The missile guidance computer scenario works as follows. Because a variation has modified some of the information the missile has obtained, it is not sure just where it is. However, it is sure where it isn’t, within reason, and it knows where it was. It now subtracts where it should be from where it wasn’t, or vice versa, and by differentiating this from the algebraic sum of where it shouldn’t be and where it was, it is able to obtain the deviation and its variation, which is called error.

See also

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