Different science researches that provide different outlooks on evidence and data ensure more accurate and complete observations or collections of data and/or evidence. One possible contrast in perspective when it comes to observation and data collection in the sciences can be gender. For example, in evolutionary biology. Chimpanzees were initially observed and studied by male biologists. Studies adopted the Charles Darwin theory of evolution, in this case, the evolution of the competition of chimpanzees to access females. Therefore, in this particular male perspective, the female chimpanzee is passive and simply does the choosing between the winning (strongest) or loosing (weakest) chimpanzee, or the strongest, male chimpanzee "wins" all the female chimpanzees.