The nature of happennings in the universe is such that, all actions take time. If you run to your school one km away, at the speed of 12 km/hr you will get there in five minutes. Even the light from our local star, the sun, takes about 8 minutes and 18 seconds, depending on the position of the earth in it's orbit. The speed of light being 299,792,458 m/s, if your light switch is 10m from the bulb and you have some device to precisely time the amount of time taken by light to travel from the light bulb to where you will be standing by the light switch, you will find light takes approximately some 10 nanoseconds to travel 10m. And from Einstein's theory of relativity it has been established so far, that the speed of light is the speed barrier of the universe.That no information can travel faster than the speed of light.In fact for the case of matter, no matter with a positive rest mass can even attain the speed of light because the more any matter approaches the speed of light, however minuscule the amount of matter be, the more the mass of that matter will approach infinity. Yet, the symmetric nature of the universe allow for twin particles to exhibit what is known as "weird action at a distance". We have established that, light takes about 10 nano seconds to traverse 10m.So anything that can cause action at 10 m in less than 10 nanoseconds must act faster than the speed of light.Yet we know that there is nothing documented that can travel at any speed exceeding the speed of light, what happens when this "weird action at a distance happen"? To put this in perspective, if there are two paricles with the required symmetry (sort of like twin particles or mirror images of each other, if you like) and these particles are separated in space by a million light years, usually the fastest transmission of information can traverse between them in a million years, because light (electromagnetic waves to be precise) if maintaining the maximum speed can travel a million years to cover a million light years, a light year being the unit of distance light will take to travel in one year. But yet what normally would take a million years, seems to happen instantaneously.What happens here? What tells the other particle a million years away that your far off twin has changed direction, or spin? Is the speed of light really the speed barrier of nature of we are just limited by our knowledge? Does the tachyon, a speculated particle with negative rest mass, and that can only travel at speeds faster than that of light, really exist?