I prefer to think that everyone should always question everything I say, and independently verify my claims with their own trusted sources. Then, if they find contradictory information, they are free to share it, so that I might possibly disabuse myself of my prior misconceptions. (As you see, I also have need for wishes.)
Of course, if you have actual research funding for me, that's a different story. I'll give you as much evidence as you can afford.
Talk is cheap, and proof will cost you. If you want evidence, you might have to grab a shovel and start digging.