Nine out of 10 of you have probably used some variation of the term "I'll never need any of this in the real world " when you were studying math in high school. True, the mechanics of long division and PEMDAS don't seem as important in day to day life as, say, knowing how to change a tire. But according to science, a lot of the problems you face every day can be quantified with a single equation. Like ...

7 The Thickness of Beer Goggles

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"Beer goggles," or the idea that alcohol makes you find people more attractive, sounds like a convenient excuse invented by douchebags who don't want to admit that they will simply have sex with anything that moves. But science says beer goggles are real.

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For proof, spend more than 10 minutes in any college town bar.

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It is, however, more complicated than "Alcohol = Boner." Thanks to the wonders of math, the effect can be precisely calculated.

The Formula:

Professors at the University of Manchester, England, worked out that the effect isn't really beer goggles, but bar goggles (or dance club goggles). It's alcohol plus a number of environmental factors, like so:

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Incidentally, this is the same equation used to calculate your likelihood of picking up an STD.

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An is the number of drinks consumed, limited only by your bodily fortitude.

d is the distance in meters between you and the object of your potential lust.

S is the smokiness of the room, rated between 0 and 10.

L is the brightness of the room, rated between 1 and 150.

Vo is a measure of your visual acuity, 6/6 being normal and 6/12 being "maced in the face."