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it is human nature to fear what one does not understand. hence the fear of the dark (things may be lurking there but we don't know what) and those who are different.

dark is just that, the absence of light. for people that means that they wear dark colors and don't appear cheerful.

evil (to me) is the desire to harm others. whether intended or not, everyone is slightly evil because everyone has wanted to harm another at some point.

That seems to be the general trend of logic used by most people... however, that's not to say that 'holy' powers of light can't be abused for evil purposes, and likewise is not to say that dark 'black magic' type powers can't be used for a good purpose. pirate

But really I think it's the fault of most authors and such these days. They are the ones who continue the logical-yet-not-entirely-true theory that light=good, dark=evil. Watch me, I'll be the first author to convey the contrary message I stated above... stare

evil and dark is pretty much the same. .. because dark side is going to the evil soo yeah.. >.<