(1) The first order of simulacra focuses on counterfeits and false images. In this instance the sign no longer refers to that which it is obligated to refer to, but rather to produce signifiers. In this level, signs cease to have obligatory meanings. Instead the sign becomes more important than the physical. That is to say that the focus is placed on the sign rather than on what it is intended to represent. Thus what becomes crucial for the furthering of simulation is the reproduction of the sign itself not the physical or the signified. This is the realm of the automaton, the obvious fake that plays with reality.
(2) The second order of simulacra is dominated by production of these false images. In this order signs become repetitive and begin to make individuals the same. Signs refer to the differentiation between the represented signified, not to reality. This is the level of the robot, more real than the automaton, but not quite human. The robot con exist independent of human control in reality, but at the same time isn't real.
(3) The third order of simulacra rests on ultimate simulation. What is present in this order is the ultimate collapse between reality and the imaginary. It is no longer possible to tell the difference between real and simulation. This is the level of the clone, not equivalent to man, but rather a hyperreal variant.