Either this description is wrong...

Logical subtype: (The Instructor)

(Valentine Meged & Anatoly Ovcharov) The logical subtype is self-assured, quiet, constrained, dry, correct and impenetrable. At times seems haughty but is moderately kind and imperturbable. Very polite and attentive to details in conversation, likes that all specify and explain their opinions, but sometimes is prone to get stuck up on nonessential details. When they ask questions they want answers to provide exhaustively detailed information. Dislikes uncertainty and is internally quite collected. They never lose their presence of mind and try to encourage those that require their support. Appears like a straight line, motionless, seeming to look through, rather than at, the interlocutor. Movements are measured but restrained, tendency to shuffle footwear when walking; when they turn they do so suddenly; their neck rests squarely on their shoulders and appears stiff.

(Victor Gulenko) Most rational logical type. Very constructive. Their aims are in hierarchy; works thoroughly and brings everything to its end without missing a detail. Not very dynamic and does not transfer confusion. Outwardly is strict, sustained, somewhat single-minded. In working situations is official, and even with close relatives can manifest a barrack style of behaviour. Clothing is conservative, for males: his suit is often in a strict, dark tone.

(Sexual behaviour) Restrained in their expression of feelings with an aim towards clarity and definition; disposed to flatness in relations and reacts negatively to quarrels. Inclined to doubts and distrustfulness. Often show concern about their partner and provide them with pleasant gifts and trifles. Require a sensitive, delicate partner, since they are straight-line/simple in sexual contacts and sufficiently restrained in the positive and negative expression of emotions. Need an attentive, thoughtful partner, whom will not tie them to their will. Their partner should yield to their persuasions and strive to satisfy all of their requirements.
Or I should finally accept the fact that Numbers is my dual.