It's generally accepted that a troll is someone who posts controversial material with the sole intention of provoking the anger of others. Unfortunately, it is often difficult, if not impossible, to know with any great degree of certainty what a person's intentions really are.
Of course, some folks seem to think that anyone who disagrees with them, or who relies heavily on facts and reason is also a troll.
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The mere fact that science may not yet adequately explain an object, event, or experience does not mean the immediate explanation should automatically default to a conspiratorial, extraterrestrial, paranormal, or supernatural cause.