The practical and analytical thinking ability of an critical thinking person leads him/her to become scientist. The unique and novelty of their research work will increase their scientist grade. To be consider as an scientist, he/she should posses some research activities.
it is the attitude of a person that makes him the scietist. a farmer can also be the scientist if he make a diary of events and make critical analysis.
Exactly Dharam. Ancient scientists did not have high, and outstanding degrees, but they provide useful science to the humanity. A science that is needed, and can be really applied for enhancing the welfare of humanity.