>>2096261It's a metaphor for the absurdity of life. Like the slug, who will eventually reach the light switch, we all crawl slowly toward something that is both utterly mundane and completely beyond our comprehension.
In the mean time, the slug doesn't know why it crawls in the direction it chose. It does not perceive the room for what it is, nor that its path ultimately terminates in a ceiling. It knows only that it must crawl, and up is as good a direction as any. Such is the life of a human.
