I personally know a man in his late thirties who nearly died of AIDS a few years ago because he had read "credible sources" on the Internet and convinced himself that HIV is harmless.

This happened already in the early 2000s. For over a decade, he ignored his HIV status (not knowing either way) thanks to the "advice" from contrarian experts on the Internet. One day he finally had a flu that didn't seem to go away. A doctor took one look at the lesions on his face and told him the bad news.

He survived, and now he wants to warn everyone about the dangers of hopeful biases when combined with the immense amount of misinformation on the Internet. He's even appeared on national media here in Finland to tell his story, and I admire his courage.