What Is an Experiment?
Most people today have an intuitive understanding of what experimentation is. This can be formulated along the lines of: perform an action-or a series of actions that are variants of each other-in order to answer a question. The answers provided by experimentation may tell us about small and simple things (such as answering the question, “What does this switch do?”) or it might tell us about something large and complex (such as answering the question, “How do people recognize objects?”). What kind of answer we get depends on many factors, including what the question was and what we did during the experimentation.