
Its well worth watching on youtube, and only lasts for 5 minutes.
If you go into a cave, deep inside a cave, you naturally are quiet, something about the dark that makes people whisper for some strange reason. I assume that because you cannot see, then you try subconciusly to highten your other senses to assist in the navigation.
If one likens the darkness to evil, then it appears to be overwhelming and contigious, but if you light a small candle, you can now see the cave for what it is, then navigation and movement in general becomes easier and faster.
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Sure, the candle cannot illuminate ALL the pockets of darkness, but now you real-eyes that the darkness is infact fragmented and not contigious. It also gives you the courage to explore those pockets of darkness if you so choose.
If you look in the cave and examine what you can now see, you will see there is no insect life in that darkness, things like spiders and creepy crawlies need to operate in the light, mosly in the shadows, which is from where they cast thier webs, out into the light, and drag thier prey into their domain, The shadows. To devour it at thier leisure.