The three stages of truth was originally penned by the German philosopher, Arthur Schopenhauer (1788-1860), who said “All truth passes through three stages. First, it is ridiculed, second it is violently opposed, and third, it is accepted as self-evident.”

Global warming
• Ridicule: The world isn’t warming that is just tree hugging rhetoric
• Violent Opposition: That’s not right, that scientific data is all wrong.
• Self-Evident: Of cause the world is warming just look at the data.