Finally, a clear definition of the virtual

When the virtual is all the sauces and it even ends describe what does not exist, it's time to rediscover this work of Pierre Levy. Obviously, this philosopher, utopian cyber culture, has often been illustrated by theatrics very far of the existence of common (us anything!) But very necessary work of defining bring very beneficial for the brave reader lights and willing effort to fight with sometimes subtle notions but still well built. Read to think less stupidly current technologiqaues mutations.