anecdote astrology bertrand russell brain in a vat carl sagan cartesian skepticism committee for skeptical inquiry contextualism creationism critical thinking david hume debunker dowsing dream argument environmental skepticism epistemology evidence evil daemon experiment faith falsifiability fideism fraud here is a hand homeopathy hypothesis inductive reasoning intellectual dishonesty james randi jewish skeptics karl popper list of skeptics and skeptical organizations local skepticism magical thinking marcello truzzi martin gardner miracle moral skepticism mythbusters opposition to cults and new religious movements parapsychology pathological science paul kurtz philosophical skepticism plato portable document format power of a method prediction protoscience pseudoscience pseudoskepticism psychic pyrrhonism quackery relativism reliabilism religious skepticism richard dawkins robert todd carroll science scientific consensus scientific method scientist semantic externalism skeptical inquirer skeptical hypothesis skepticism steven novella unidentified flying object wikiquote