The fixed profile. A 4/1 has a set direction and cannot really be diverted from it, which makes life narrower and unusually clear.
Conscious line 4: Consciously networked. Everything arrives through people who know you.
Unconscious line 1: Unconsciously a deep foundation. There is something you know without having consciously studied it.
The two lines together
4/1 is called the fixed profile because both lines sit in the same geometry. There is one direction, and attempts to take another do not take. Other people find that stubborn; from the inside it is simply that nothing else is available.
The upside is unusual clarity about what you are for. The cost is very little room to manoeuvre when the environment is wrong, since the answer is to change the environment rather than the direction.