The experienced and skilled observer does not have perceptual experien — Alan Chalmers

"Which facts are relevant and which are not relevant to a science will be relative to the current state of development of that science."

"The aim of science is to falsify theories and to replace them by better theories, theories that demonstrate a greater ability to withstand tests."

"Many kinds of processes are at work in the world around us, and they are all superimposed on, and interact with, each other in complicated ways."

"Two normal observers viewing the same object from the same place under the same physical circumstances do not necessarily have identical visual experiences, even though the images on their respective retinas may be virtually identical."

"A far as perception is concerned, the only things with which an observer has direct and immediate contact are his or her experiences."

"Science is widely esteemed. Apparently it is a widely held belief that there is something special about science and its methods."