The trifix, or tritype as it's now called, emphasizes a wholeness to our personality by showing how each individual contains all three centers of intelligence in their personality. The inner lines show additional connections from one type to two other types (stress and security points). By adjusting the inner lines so that all three points are in different centers, you end up with what I'm calling tricenters.

Although I agree with the tritype concept in that each fully functioning person accesses all three centers of intelligence, I don't think all the types are placed in their correct center of intelligence. As such, I find that a person's tritype doesn't necessarily indicate a type from each center because tritype is based on the debatable assumption that the types are placed in their correct centers.

When it comes to the enneatypes, what's always bothered me about the inner lines, besides the fact that they are incorrectly used for something other than understanding a process, is that they are inconsistent. If I generalize that the inner lines represent stress and security points or directions of integration and disintegration then there should be a consistency of relationship between the numbers, but this is not the case. For example, points 6, 8, 9, 1 and 3 connect to points three numbers away on both sides, but points 2, 4, 5 and 7 don't. I don't see how you can generalize a consistent meaning to something inconsistent.

The arrows indicating direction seem another arbitrary use of the inner lines. I see absolutely no reason that because an arrow points toward another number it should represent a stress point or direction of disintegration. Likewise, I see no reason that an arrow pointing from another number should represent a security point or direction of integration.

What I propose here is simple: incorporate the tricenter approach indicated in the tritype concept by adjusting the inner lines so that they're consistent.

Here's an example of how this could be used.

Since there are no arrows, the stress point of type 9 could be either 6 or 3 depending on the individual. Likewise, the security point could be either 6 or 3 depending on the stress point of the individual. A type 9's tricenter of 3-9-6 indicates a stress point of 3 and a security point of 6 with the dominant type 9 for the individual in the middle. Likewise, a type 9's tricenter of 6-9-3 indicates a stress point of 6 and a security point of 3 with the dominant type 9 for the individual in the middle.

The two differences between the traditional stress/security points and the tricenter stress/security points are: 1) because there are no arrows, either point can be stress or security; and 2) making the lines more consistent replaces the old connections between 7-5 and 4-2 with the new connections of 7-4 and 5-2 (this also places all three connected points in different centers).

Although we can't necessarily assume the types are placed in the correct centers, I think we can assume that all three centers are represented in a given tricenter because of the complementarity of the types within each tricenter.