In the USA, a person continues free on his way until he is detained. Let's say a peace officer stops a motorist and issues him a summons for not stopping at a stop sign. At the trial, the prosecutor kindly informs the Defendant:" I am sorry Sir, 'one cannot prove a negative,' you are going to have to prove that you did stop at the stop sign. We are very sorry for that. "Further, we do not have to present evidence because the evidence of a negative is by definition a lack of evidence." Funny Stuff.
False equivalency.
But, fallacy aside, technically, the idea that "You can't prove a negative" is false.
I use that term, though, because it is what theists like to throw at skeptics. "You can't prove a negative, so therefore, my argument that God exists is true!"
Let's go back to my Unicorn example. I asked you to prove that Unicorns didn't exist.
You actually CAN prove Unicorns don't exist.
Modus tollens
Premise 1: If unicorns had existed, then there is evidence in the fossil record.
Premise 2: There is no evidence of unicorns in the fossil record.
Conclusion: Therefore, unicorns never existed.
So let's use Modus tollens to prove that YHWH, the God of the bible doesn't exist.
Premise 1: If YHWH of the Bible exists, then there would be geological evidence of a global flood that occurred ~4,000 years ago.
Premise 2: There is no geological evidence of a global flood ~4,000 years ago.
Conclusion: Therefore, YHWH of the Bible does not exist.
I could go on and on, using divine intervention events described in the Bible that there should be evidence for, and equally come to the same conclusion every time.
Would anyone else like to help me out with a few more modus tollens arguments?