What does "the dark" symbolize in Camus' novel The Stranger?

One
of the points of Camus' novel is that since there is no underlying, inherent meaning in life
(though Camus disclaimed existentialism), meaning comes directly through sensory
experience, and this sensory experience can completely overwhelm and in fact
determine the course of events. While Camus does not advocate of Fate, he strongly suggests the
determinism of sensory experience. Thus it is the light that Meursault blames for his actions on
the beach.

We find this credible--though the judge and jury do not--because
we (not they) have been with him from the time he received the message about his...