“A **pure mathematician**, when stuck on the problem under study, often decides to **narrow** the problem further and so **avoid** the obstruction. An **applied mathematician **interprets being stuck as an indication that it is time to** learn more** mathematics and find **better tools” **

**— ***Distinguished differential geometer Eugenio Calabi*

**Ref: ***https://www.quantamagazine.org/20151203-big-datas-mathematical-mysteries/*