Science is a way of thinking much more than it is a body of knowledge.
Carl Sagan - Broca's Brain Background Doing science is a way of observing and thinking about natural phenomena with the aim of trying to understand them. Models are human generated representations of natural phenomena. What sets science apart from other human intellectual endeavors is that scientific knowledge is based on experiments and observations with the ultimate authority being nature itself. Scientific knowledge is based on the cumulative work of scientists over the past 300 years. As a start, your common sense and intuition are highly reliable guides to scientific thinking.