The logical and analytical type. They are especially attuned to difficult creative and intellectual challenges and always look for something more complex to dig into. They are great at finding subtle connections between things and imagine far-reaching implications.
They enjoy working with complex things using a lot of concepts and imaginative models of reality. Since they are not very good at seeing and understanding the needs of other people, they might come across as arrogant, impatient and insensitive to people that need some time to understand what they are talking about.
Saves on all those silly questions. I'll accept insensitivity too, as regarding my entry before the last written purely on the ecclesiastical subject but then realising I was leaving no gap between one of those actual conjoined events and the unfortunate, occasional but general human condition of giving birth to conjoined twins.
Bishop Alan has done the same (regarding Myers Briggs - he is not insensitive). He is ISTP.