Is Zion a Real World ?
Many supporters (including me) of this movie strongly believe that Zion is NOT a real world.
Their based on the following reasons :
1) Neo can stop those "mechanical optopus" outside the matrix system.
2) Neo didn't die even one of the mechanical optopus passed through his body
3) Zion is simply a place designed by machine for fixing those bugs (Neo,Trinity etc.....) who feel unreal in matrix. Once they wake up, they just go to another system (Zion) and they think that they are free. But in fact, they (bugs) are still under the control of the machine.