Fp1 and Fp2 brain regions - Rationality vs. Irrationality?

[Petter]

Knowledge of how things work (Te) is very important for health (Si). Just look at the medical profession, it's literally all about how to use knowledge of how your body works to improve or maintain its state of health. That's Te + Si.

That's a really far-fetched explanation. How do you explain Si when it comes to a mechanic (SLI, SiTe... in your view)?

Mechanic and physician are two very different professions, which attract two very different groups of people (i.e. types).