I'll just go ahead and throw out the definition from Wiki, for the new topic:
http://therealljidol.livejournal.com/805095.html or at least the first part of it.
Because having a starting point for your thought process can be helpful:
"In physical cosmology, the Copernican principle, named after Nicolaus Copernicus, states that Earth is not in a central, specially favored position in the universe.[1] More recently, the principle has been generalized to the relativistic concept that humans are not privileged observers of the universe.[2] In this sense, it is equivalent to the mediocrity principle, with important implications for the philosophy of science."
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"I'll just go ahead and throw out the definition from Wiki..." is a lousy way to grab your attention. My only reason I can get away with it is that I have a bit of a captive audience. ;)
You're not as lucky. You need to grab someone from the first sentence and make them *want* to read more.
What is your favorite "OMG... I need to read more" opening line, and what did you learn from it for crafting your own?