“It takes a flexible, curious mind to seek out competing ideas and weigh them. Then it takes even more rigor to fashion a complex solution to a vexing problem. It’s much easier to listen to one or two voices who affirm your preconceptions and dismiss all others because (you think) they are somehow against you.” “The self-sealing doctrine temporarily makes life easier. Its users don’t have to really entertain inconvenient evidence. They can even turn it aside in ways that make them feel better.”