in addition, science has well established procedures such as the use of controls that are the foundation of a logical argument to establish cause and effect. The use of controls enables the scientist to claim that any change in a perceived outcome can be attributed to a change in one specific feature. Failure to use such techniques leads to results where effect are confounded and cannot be trusted. Likewise, double-blind trials enable scientists to claim that the results have not been influenced either by the subjects of the experiment, or by the experimenter themselves. Other scientist such as taxonomists and ecologists are engaged in the process of identifying underlying patterns and interactions in the natural world that warrant a search for an explanation. In other cases, such as evolution, plate tectonics or climate change, science relies on arguments that are an inference to the best explanation examining a range of hypotheses and eliminating those which do not fit with the evidence.