When people say that science is settled, they are referring to a consensus within the scientific community on a particular scientific theory, principle, or body of evidence. It means that based on extensive research, experimentation, and peer-reviewed studies, there is a high degree of agreement among scientists in a given field regarding the validity and accuracy of a scientific concept or understanding.
The idea that science is settled is often used in discussions related to well-established scientific theories, such as gravity, evolution, or the laws of thermodynamics, where the body of evidence and scientific consensus overwhelmingly support these concepts. In such cases, the scientific community has scrutinized and evaluated the available evidence, and the consensus reflects a high level of confidence in the understanding of the underlying principles.
However, it's important to note that the nature of science is to be open to revision and improvement as new evidence emerges. Scientific knowledge is dynamic and subject to change when new data, alternative explanations, or novel insights come to light. Science encourages skepticism, critical thinking, and ongoing investigation to refine existing knowledge or challenge established theories.
Therefore, while some scientific concepts may be considered settled based on the current body of evidence and consensus, science as a whole is a process of inquiry that continually seeks to expand knowledge and refine understanding. Scientists are always open to revisiting and revising ideas when new evidence or advancements emerge, ensuring that scientific knowledge remains robust and reliable.