The sciences and technology are populated with Rationals. Artisan Artisans are concrete and utilitarian, and are particularly adept at improving existing designs or processes. Understandably, there are many Artisans in the arts and entertainment industry, as well as business operations. Idealist Idealists are insightful, charismatic and enthusiastic. They are at their best dealing with abstract concepts rather than concrete details.
Idealists make excellent motivational speakers, teachers, diplomats, and religious leaders.
Guardian Cooperative, reliable, goal-oriented and concrete, Guardians are loyal, conservative traditionalists. They are detail people who carry out specific plans and instructions. If you choose to employ the Keirsey Temperament Sorter, keep in mind that it is only a rough indicator of personality, not a definitive test. Use it as a supplement resource, not as a guide by itself. I have found it useful for a team to take the survey as a group in the early days of a project.