Paleoanthropologists combine the methods of paleontologists and biological anthropologists into one comprehensive study. Paleontology is the study of fossil evidence of ancient creatures, and biological anthropology is the inter-disciplinary study of physical changes in humans. Therefore, a paleoanthropologist is a scientist who studies fossil evidence of ancient human beings. Paleoanthropologists have played a major role in discovering what we know about evolution today.
Science relies on hypothesis, experimentation, data collection, data analysis, drawing conclusions from data, sharing of data, changing conclusions based on new data, etc.