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The word "theory" has a number of distinct meanings in different fields of knowledge, depending on the context and their methodologies. In common usage, people use the word "theory" to signify "conjecture", "speculation", or "opinion." In this sense, "theories" are opposed to "facts" — parts of the world, or claims about the world, that are real or true regardless of what people think.

In science, a theory is a proposed description, explanation, or model of the manner of interaction of a set of natural phenomena, capable of predicting future occurrences or observations of the same kind, and capable of being tested through experiment or otherwise falsified through empirical observation. It follows from this that for scientists "theory" and "fact" do not necessarily stand in opposition. For example, it is a fact that an apple dropped on earth has been observed to fall towards the center of the planet, and the theory which explains why the apple behaves so is the current theory of gravitation.

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RT @ZodiacFacts: If an #Aquarius can't prove it, they'll redirect the conversation toward more theories and supposition.
Kaj_Stole_Him (Kajah Peace) Tue, 17 Jan 2012 01:31:32 -0000
RT @ZodiacFacts: If an #Aquarius can't prove it, they'll redirect the conversation toward more theories and supposition.
RT @ZodiacFacts: If an #Aquarius can't prove it, they'll redirect the conversation toward more theories and supposition.
NisaAssalaam (Annisa) Tue, 17 Jan 2012 01:31:25 -0000
RT @ZodiacFacts: If an #Aquarius can't prove it, they'll redirect the conversation toward more theories and supposition.
RT @ReutersScience: Science's "most beautiful theories" http://t.co/x3Eymdsm
doctorcat (Edgar Islas) Tue, 17 Jan 2012 01:30:41 -0000
RT @ReutersScience: Science's "most beautiful theories" http://t.co/x3Eymdsm
RT @ZodiacFacts: If an #Aquarius can't prove it, they'll redirect the conversation toward more theories and supposition.
_iPromisee (Kaprii =)) Tue, 17 Jan 2012 01:30:33 -0000
RT @ZodiacFacts: If an #Aquarius can't prove it, they'll redirect the conversation toward more theories and supposition.
Science's "most beautiful theories" http://t.co/rGJeabFj
jbonifaz (jbonifaz) Tue, 17 Jan 2012 01:30:32 -0000
Science's "most beautiful theories" http://t.co/rGJeabFj
@mezcroft So, you liked? The ep & the interesting explanation theories? :o)
DolfynGen (Dolfyn Gen) Tue, 17 Jan 2012 01:30:11 -0000
@mezcroft So, you liked? The ep & the interesting explanation theories? :o)

 
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