Bill Nye said that "Creation is bad for science." Ken Ham then referred to several scientists who were young earth creationists. Ham asked Nye how he could explain the laws of logic and physics in a naturalistic worldview. Ham asked Nye for an example of something that could only have been invented from an evolutionary worldview. He also showed the difference between what's called historical science and observational science. Ham gave an example of biological adaptation. He brought up "Tiktaalik" as an example of a scientific prediction. He added, "Mr. Ham and his worldview does not have this capability". Ham claimed the mainstream scientific community has made creationists afraid to speak out. He went on to say they need "scientific freedom" to speak.