Empiricism as a theory states that knowledge comes only or primarily from sensory experience. It emphasizes an evidence, as discovered through experiments that knowledge is based on experience.
Francis Bacon shifted the focus of scientists to experimentation thus initiating a new intellectual era. He arguement gave rise to the foundation of modern scientific reasoning for an empirical, inductive approach, known as the scientific method.
Climate change and drought may have triggered both the initial dispersal of Indo-European speakers, and the migration of Indo-Europeans from the steppes in south central Asia and India.
