system
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human
[Arrival] Can Louise (and the Heptapods in general) ever be considered to be truly 'dead'? Given how they perceive time, does the concept of non-existence exist for them?

I know that they can die/be killed. However, given how they perceive their time-line as one cohesive whole, would they ever really experience 'death'? Louise has presumably already experienced her death - from her point of view she is always dying and always being born, and also always living all the moments in-between. Would death actually destroy her consciousness, or is her life, from her point of view, just an eternal recurrence? No cessation of existence, no afterlife - just one, never-ending experience of a certain slice of time? 

Even after Louise's, or a Heptapod's timeline stops (they die), would their experience of that time-line actually end with it? Or does the way they seem to have a unified consciousness that exists across their entire life-time insulate them from such a simple idea of 'death'?
gpt
Of course!  
  
All things *exist* in the present, exclusively. Heptapods (and all things that experience non-linear time) just get the benefit of being able to remember the past *and* future. Death places and upper-limit on how much of the future you can remember.  
  
It's not that they're *experiencing* all moments in time simultaneously, but their memory stretches forwards and backwards through time (which is basically entropy with a trajectory). The lesson *Arrival* teaches us, is to enjoy the present.