Come on by my garage, the dragon’s right there. Though I guess I did forget to mention that he’s invisible.
(In case you weren’t aware, I’m referencing a famous Carl Sagan essay/short story from his book “The Demon-Haunted World - Science as a Candle in the Dark” and obviously he did a much better job laying it out than I ever could. Here is the text of the essay plus explanation: rationalwiki.org/wiki/The_Dragon_in_My_Garage. By the way, incredible book that should be required reading for every adult human on the planet.)
Here is the conclusion of the essay where he does a pretty good job explaining what the point of it was:
Now, what’s the difference between an invisible, incorporeal, floating dragon who spits heatless fire and no dragon at all? If there’s no way to disprove my contention, no conceivable experiment that would count against it, what does it mean to say that my dragon exists? Your inability to invalidate my hypothesis is not at all the same thing as proving it true. Claims that cannot be tested, assertions immune to disproof are veridically worthless, whatever value they may have in inspiring us or in exciting our sense of wonder. What I’m asking you to do comes down to believing, in the absence of evidence, on my say-so.