Step 4 of 4

Group Complexity Curve

How much does this group's size and composition amplify it?

Matrixfinds the gaps→Gapsorts them into logistics vs. different trips→Indexscores what's left by exposure and escape→Curvemultiplies by group shape

What it is

The Curve is the multiplier. Same frictions, more places for them to surface.

How it works

Coordination doesn't rise with headcount. It rises with relationships, and relationships rise faster:

Relationships = n(n−1) ÷ 2

PeopleRelationships
4 people6
6 people15
8 people28
12 people66
  • Couples travel as units. Six people with three couples behaves more like three parties than six.
  • Subgroups with history form their own weather. Four college friends plus two partners is not a group of six. It's a group of four with guests.
  • The organizer is carrying load nobody else sees, and usually absorbing friction on everyone's behalf.
  • The wildcard — the one person who's never traveled with anyone else here — has no history to fall back on when something goes sideways.

That's the size half. The composition half is where it gets interesting, because groups don't actually travel as individuals:

The worked example

The Lisbon group

Six people, 15 relationships. But two couples, so functionally four parties. Priya is organizing and is on the low end of the Budget split, which means the person most exposed to the money conversation is the same person avoiding it to keep the peace. Cole is the wildcard and the late riser — the friction with the least history behind it.

So: a modest Index, amplified by two things the Matrix can't see. That's the report.

What it doesn't see

History and trust. Six friends who've done this five times aren't 15 relationships. They're a system. The Curve assumes every relationship carries equal load, and in a group that's been through some things together, it doesn't.

Next → Take The Trip Test

Every framework on this site is free. The diagnosis — which of your travelers differ, where, and what to say before the deposit — is the report.