Where is the definition of "evidence" does it mention anything at all about specific set of standards:
evidence
n 1: your basis for belief or disbelief; knowledge on which to
base belief; "the evidence that smoking causes lung
cancer is very compelling" [syn: grounds]
2: an indication that makes something evident; "his trembling
was evidence of his fear"
3: (law) all the means by which any alleged matter of fact
whose truth is investigated at judicial trial is
established or disproved
Perhaps if you presented your preferred definition of the word "evidence", since it most certainly has to be different than the one I presented above, it would be helpful?
Looks like yours is sufficient. Let's look at them!
(1)
n 1: your basis for belief or disbelief; knowledge on which to
base belief; "the evidence that smoking causes lung
cancer is very compelling" [syn: grounds]
What is a "basis?" I randomly found "
1. something that underlies, supports, or is essential to something else, esp an abstract idea"
Okay, so evidence is something which supports belief; it's knowledge on which to base belief. What is knowledge? We say things like "I know it's going to rain tomorrow," but do we really know them? No -- in this circumstance it's clear that "knowledge" is referring to something other than an enhanced hunch.
Knowledge is justified true belief. To know something, you must have justification for it, you must believe it, and it must be true. That "justification" bit is the evidence. One doesn't need to include in the definition of "justification" or "evidence" that coin flipping doesn't constitute justification for a concept in most contexts -- that is simply obvious.
(2) an indication that makes something evident; "his tremblingwas evidence of his fear"
This one's fairly tautologous, noting that they used the word "evident" in the definition for "evidence," which is a little silly... but again, it's obvious that a coin flip or a dart toss with different state capitols on them HAPPENING to arrive at a correct answer by sheer chance does not constitute "an indication that makes something evident." Nor does someone spouting "I read it in a book" qualify as "an indication that makes something evident."
(3) (law) all the means by which any alleged matter of fact
whose truth is investigated at judicial trial is
established or disproved
What is to establish? "To prove the validity or truth of..." is the best definition for this context. Again, we're back to proving -- justifying.
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Sure, there are difficulties with equivocation and semantics in a language that borrows so many words for so many different purposes. However, in a debate about evidence for the existence of something it's pretty clear that the context is philosophical evidence (which includes scientific evidence and analytical evidence), which is something specific. Talking about layman's definitions of "evidence" and "knowledge" in a philosophical discussion is like talkinga bout layman's definitions of "theory" in a scientific discussion -- it's like bringing a knife to a gunfight.