[ExI] Dark Energy and Causal Cells

[Stuart LaForge]

I mistakenly wrote:
> A causal cell is a finite volume of space-time enclosed by an event
> horizon wherein all observers should agree on the temporal ordering of
> events. That is to say everyone in a causal cell shares the same arrow of
>  time.

I meant to write:
A causal cell is a finite volume of space-time enclosed by an event
horizon wherein all observers should agree on the temporal ordering of
events for which they were mutually present. That is to say everyone in a
causal cell shares the same arrow of time.

Stuart LaForge