Jenny McCarthy, with an honorable mention to Jim Carrey. McCarthy has taken “airhead blonde” to new heights by going with her gut feeling that her son’s autism was caused by vaccination — despite all medical evidence to the contrary. And because she’s wealthy — and is dating the even wealthier Carrey — she can get people to listen to her, which is a public health disaster in a country (and world) where critical thinking skills are in absurdly short supply.

McCarthy is too arrogantly ignorant to appreciate the depths of her own ignorance. She feels that her mommy instincts and her dabblings on the internet were enough to trump the consensus of expert opinion built on numerous high quality studies that shows that there is no link between vaccines and autism.

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Jenny McCarthy is a dangerous deluded crank who does not have the sliver of common sense or humility it would take to consider the possibility that perhaps she does not understand the science as well as trained scientists. At the very least she should recognize that this is a controversy – one that should be decided by the scientific evidence.