Does it have anything to do with balance or symmetry?
127435
Star fish have five *arms* (or, sometimes, multiples of five or six arms).  Their legs are called "tube feet" and are found in the grooves under the arms.  They have an even number of them!\n\nMost animals have an even number of legs because they are symmetrical along a single axis, so both sides end up looking the same.  The only way to have an odd number would be to not be bilaterally symmetrical (and the only animals who aren't don't have legs!) or to have a leg in the middle, which wouldn't be much use.\n\nThe only "exception" to this would be an insect-like animal called the springtail.  It's not really a leg, but they do have their abdomen bent over and underneath them.  They use it to spring very high into the air, so you could call it a leg of a sort.  Sprintails are neat.  They are very common, but most people never notice them because they are mostly quite small.
611368
yin and yang is a symbol of the balance in all things-phisical,mental and spiritual-in all good theres a little evil and in all evil theres a little good-what you give is what you get (equally) is karma and we seek karmic balance to achieve harmony.This is Heavy - if you take the symbol and spin it on a top clockwise - representing positive direction-it turns white,if you spin it anticlockwise negative karmic direction against the wind so to speak-it turns black-try it ! - it is truly a mystical thing i have shared with you all this day.x something about casting pearls is  in the background of my mind,what the hell i believe in sharing knowledge.x
23098
A mirror preserves absolute direction, both horizontally and vertically.  Say you're facing west; the reflection of your north hand is on the same side of the room as your real north hand -- namely the north side.  And the reflection of the top of your body is toward the ceiling, just like the real top of your body.  That's because north vs. south and up vs. down are the same for everybody.  But right and left are not absolute directions.  Your north hand is on the right because you're facing west.  If someone were facing east, their north hand would be on the left.  And your reflection in this example _is_ facing east because you are facing west, and the reflection is looking back at you.  So, your reflection's north hand, which is the same as your north (that is, right) hand, is its left hand.
25927
Our sense of balance is based on two things: our eyes and a gel located deep inside of our ears. This gel is the main controller of balance, and it relies on gravity to work. Why? Because gravity pulls it toward Earth, telling us which way is down. In space, gravity doesn't tug on that gel, letting it float around. When you spin around really fast, that gel is being flung against the sides of its container due to centripitale [sic] force, and you become dizzy. So in space when its floating around, the astronauts get very very confused!\n   However, over time while in space, the astronauts' brains override the gel's function, helping prevent even more cross-eyes and headaches.
55173
Swings mess with your inner ear which is responsible for your balance.  The same kind of thing happens on the seashore when the tide is going out.  I was once standing there looking down and I ended up on my butt.  It is one of those times when your senses play tricks on your brain.
476557
hey, when you have 2 electrons in the same orbital, you will always have one spinning up and one spinning down... its about balance, if both electrons were spinning the same direction, they could not stay in they're orbits...
283168
When you run around a track, you have two choices. They picked one and standardized it.\n\nIt may be based on a predominantly right-handed populations preference for running with their dominant leg on the outside of a turn. I have no scientific backing for that, only personal preference which may be skewed from years of running around tracks in an anti clockwise direction.
408506
Probably compensation for an unnatural move...it doesn't feel right, so your body tries to compensate for it.
85042
yes it means that the system is either in equilibrium or no force is being appplied on the point.(i.e. , no charge is present)
180734
It is a factor in their formation. As matter gravitationally comes in proximity with other matter, the "pieces" start orbiting one another. As other pieces join the group, they influence all the other pieces in the group simultaneously, so the whole set of objects tends to change it's axis of rotation as a group. In the end, there is a cluster of objects that all tend to rotate within the same general plane or around the same axis of rotation.\n\nFor example, most of the planets in the solar system rotate on an axis that is very similar to their axis of revolution around the sun. This is because the "pieces" of mater that formed the solar system started rotating around (orbiting) one another in a single plane. As some of the pieces crashed into one another and combined into planets, stars, etc. some of the orbital energy was transformed into rotational energy, but with angular momentum in the same direction as the rotational energy. Thus revolution and rotation are generally in the same direction with similar axes.
122697
it might just be a hormonial in balance
469735
Yes.\n\nSkew symmetry means that A^T=-A where A^T is the transpose of A. If (a_ij ) are the entries of A, this will say that\na_ji=-a_ij.\nWith i=j,\na_ii=-a_ii,\nso \na_ii=0.
349196
It is actually common that one arm is a different size than the other.  Body builders have this problem often and is one of the reasons they are graded on symmetry.  Any cardivascular excersize especially dancing works the largest muscles in the body which are the legs.  This releases hormones that promote muscle growth.  So you are probably predisposed to this genetically.  Especially if you are right handed.
322198
An object is symmetrical if it could be cut down the middle and produce two mirror images.  "Bilateral" just means "two sides", indicating that the object is symetrical in one direction.  The term is used in biology, and is a common trait of the animal kingdom.  \n\nFor instance, look at yourself.  You have one eye on either side of your nose, one ear on either side of your head, one arm on either side of your shoulders and one leg on either side of your hips.  If you took a picture of yourself and cut it down the middle, from top to bottom, the two pictures would be mirror images of one another.  This is bilateral symmetry, the same on both sides.
495213
Yes. Bilateral symmetry. The are symmetrical from side to side.\n\n;-D Don't go in the water when they are hungry!
319813
If it is balanced, it is in equilibrium by definition.
512634
I was just about to ask the same question. It is interesting that it is so evenly divided. Both sides think they are right. What keeps it from tilting one way or the other?