There's nothing ironic about a skeptic being wrong if he admits his mistake when presented with evidence to the contrary. (Which Penn Jillette did.)
"There's nothing ironic about a skeptic being wrong if he admits his mistake when presented with evidence to the contrary." ~ Martin Luther King Jr.
I don't agree with Penn on a lot of things, but I admire his humility. His @ replies to people on Twitter are are basically saying, "Famous people screw up too. I can be an idiot sometimes."
That shouldn't be a breath of fresh air for me as far as public figures go, but it sadly is.