Many individuals and organisations have written about such work many times before and it is available to the public. A concise definition of science is 'an organised and systematic activity that gathers knowledge about the world and condenses that knowledge into testable laws and principles'. Generalisations can be made unambiguous if something can be measured properly using universally-accepted scales. The best science stimulates further discovery, often in unpredictable new directions, and new knowledge provides an additional test of the original principles that led to its discovery. The explanations of different phenomena most likely to survive are those that can be connected and proved consistent with one another.
Scientists design experiments to investigate particular questions.
The scientific method is best applied by varying one parameter in an experiment, ensuring everything else remains constant, and observing how that single change affects the overall system. Animal Experimentation and the Scientific Method Animal experimentation is not scientific. It does not adhere to the five diagnostic steps listed above. For example, the age of the animal can produce different, unpredictable results from the same stimulus. The time of day or year, and the conditions in which the animals are kept, can change the results of even simple tests.