It is one of the 16 personality types devised by Myers-briggs.

The INTP personality type has an inclination towards philosophy and innovation, with a particular fascination for logical analysis, systems, and design. They are theoretical thinkers who seek to uncover principles governing the world around them. Despite their detached and analytical nature, INTPs are often so deeply absorbed in their thoughts that they may appear oblivious to their surroundings. They devote much of their time to exploring new concepts, drawing connections between disparate ideas, and gaining a deeper understanding of the workings of the universe. For INTPs, life is a constant process of inquiry into the mysteries of existence. I have taken the personality test a couple of times over many years and always land up with INTP.