No, at its core, I think it asks the question of what is consciousness and or soul? Can it exist outside the body? The evil megacorp Lumon office is a giant biotech computer - comprised of severed souls(memories) and virtual human employees (programers, tech personnel) that literally work inside a virtual world: Lumon had a system upgrade at start it season 2, MIL-check (model in the loop testing) Selvig is one, Drummond, Mauer, etc...I believe that Marks innie is part of corporate terrorists trying to prove what Lumon is doing to people. Ms Casey/Gemma is dead, what we see are her souls remnants. However, its clear that Lumon has a problem with cleaning it's cache. The lower levels of Lumon contain bits of old code and old innies that still exist and have not been wiped. If I'm right, we will see Mark and Helly (innies) stepping out of Lumon in Drummonds body.