Sutherland's concept of professional theft has two critical dimensions. first, thieves engage in limited types of crime. the second requirement is the:

The second requirement is the " exclusive use of wits, front, and talking ability".

Edwin Sutherland born in 1883 and died in 1950, was a criminologist proposed the idea of differential association for which he is best known. He said that by engaging with other people acquire knowledge of the values, behaviors and motives behind criminal conduct.