To not always be true. It's a little hard to cite hundreds of years of science history. But one of the big examples is general relativity, from many aspects. Ma

To not always be true. It's a little hard to cite hundreds of years of science history. But one of the big examples is general relativity, from many aspects. Many scientists simply didn't believe it (yes, the word "believe"). One could follow the theoretical arguments, which were sound, but many didn't want to. Even once evidence started coming in, many still didn't believe it. It took many decades for general relativity to be broadly accepted, and now today, it's one of the most tested and verified theories. The book Black Hole: How an Idea Abandoned by Newtonians, Hated by Einstein, and Gambled on by Hawking Became Loved is a pretty good one that covers various components of this story, in particular focusing on black holes. There's far more belief and bias in science than the science community will admit to.