"T-shaped people have two kinds of characteristics, hence the use of the letter “T” to describe them. The vertical stroke of the “T” is a depth of skill that allows them to contribute to the creative process. That can be from any number of different fields: an industrial designer, an architect, a social scientist, a business specialist or a mechanical engineer. The horizontal stroke of the “T” is the disposition for collaboration across disciplines. It is composed of two things. First, empathy. It’s important because it allows people to imagine the problem from another perspective- to stand in somebody else’s shoes. Second, they tend to get very enthusiastic about other people’s disciplines, to the point that they may actually start to practice them. Tshaped people have both depth and breadth in their skills."
Source : chiefexecutive.net