Apparently there is such a thing, but I've never observed one in person. Whether the picture I found of a white raven is real or doctored I cannot tell you for certain. But what this post is about is the paranormal, more specifically about philosophy and how it relates to the paranormal and science. During the A to Z Challenge I have touched on quite a few paranormal topics. Some I think require quite a bit more suspension of belief to even entertain in your mind, while others are much more believable.
But back to that white raven.
According to the late Carl Gustav Hempel, you cannot say with one hundred percent certainty that there is no such thing as a white raven. You see, Hempel was a huge critic of inductive reasoning, which was widely used in science back in the mid-20th Century. They also used to think that what was reality was anything a human being could touch, see, smell or feel.
In any case, to boil things down to a more basic level, Hempel argued that you could not possibly make a statement that "all ravens are black" simply because the only way you could say that with certainty would be to observe all of the ravens in the world to ensure there is no such thing as a white raven. All it would take would be to find that one white raven in existence, and it would absolutely destroy the statement that all of that species of bird are black.
This is why I sigh to myself when people make statements like "there is no way sentient life exists on other planets anywhere" because how could a person at the present moment even know that? I think some people think I'm a gullible fool because I am willing to entertain in my mind a number of different paranormal theories. But just like scientific theories, they are just that -- theories. They are untested, unproven and so I cannot execute final judgment on those theories. How many creatures have people proudly declared were a figment of society's collective imagination only for those creatures to actually be discovered in highly verifiable ways some time later? Gorillas are a prime example cryptozoologists love to cite, as are giant squids.
Do I have my own personal beliefs or views on various paranormal topics? Absolutely. But when I write about them in a nonfiction setting I try to wash my writing of my own bias. Sometimes I do a better job of that than other times. I do this because I want readers to draw their own conclusions. I also do this because I cannot observe all of the crows in the world; I simply do not have the time or the resources.
Where does that leave me? Suspending final judgment on many, many paranormal topics.