To: To Whomever it May Concern
From: Your Doting Uncle Sunstone
Date: March, 23, 2018
Subject: Have You Gotten "the Memo" Yet On Proving a Negative?
In folk logic, it is impossible to prove a negative. So it is impossible, according to folk logicians, to prove that Santa Claus, the Easter Bunny, unicorns, the Loch Ness Monster, God, Bigfoot, and
@Debater Slayer's morals don’t exist.
*cough* *cough* However, all or almost all professional logicians would laugh at such a notion. "Hah! Hah!", they would laugh! "Hah! Hah!" (<--------- Disclaimer: This is a mere simulation of logicians laughing. Real logicians might or might not laugh in a similar manner. No logicians were hurt during the creation of this simulation.)
Seriously, I have yet to come across even a single paper by a professional in logic or in epistemology that says you can't prove a negative. Not one! Moreover, I've come across papers in peer-reviewed journals that argue (persuasively, in my opinion) that you can indeed prove a negative --
just as well as you can prove anything else (and both inductively and deductively).
Just one example here, just
one example to keep things short and to the point:
One of the most basic rules or laws of logic is called the "Law of Non-Contradiction". Here's one formulation of it: "A proposition cannot be both true and not true at the same time." Nothing is both true and false at the same moment.
Please take a moment to notice that the law is a negative statement.
Now, I won't go into the gory details here, but you can actually
prove that law is true, prove it according to rigorous, air-tight, reasoning (although it's a little complicated). So, right off the bat, with a very basic law of logic, we have a case of proving the negative.
Inductively speaking, you can also prove negatives! To be precise, you can prove them just as well as you can prove anything else inductively.
So you have now "gotten the memo" on whether you can or cannot logically prove a negative.
Please enjoy the rest of your day and accept my apologies for yet once again being insufferable.
cc
@Terese