It is generally accepted that the history of agriculture began more than 10,000 years ago. But, without written records, the evolution of agriculture can only be reconstructed through deductions using logic. These deductions are based on anthropological and arhaeological evidences rather than scientific facts. Examples of these evidences are artifacts of ancient farming tools and remnants of wild grain.
It is believed that the transformation from hunting-gathering to agriculture occured gradually after a long period of time. According to Went and The Editors of Life (1963), the early development of agriculture may have involved first the management of wild grains and other useful plants by removing adjacent weeds. It is also possible later that a primitive tribe may have discovered a vigorous plant; the seeds were harvested for food, but some were deliberately sown to ensure supply for the next season.