Prologue

I read Earth’s public commitments with a prospective life in mind. If someone tried to plan under the terms they offered, what would there be reason to count on? I kept that question beside every part of the survey.

A plan rarely rests on one person’s effort alone. It depends on conditions they cannot supply, boundaries they cannot redraw, and arrangements they cannot repair by themselves. I therefore read each public promise in its wider relation — not as an assurance between two individuals, but as a structure someone might try to build upon.

I approached those commitments without demanding that they promise everything. A limited undertaking can matter greatly to a life arranged around it. My first task was to establish what had actually been offered, and to distinguish that undertaking from everything someone might hope it would supply.

The possibility of failure kept the life in view. If a plan depended on the assurance, I needed to consider what its failure would mean for the course someone had prepared to take.

My experience with other civilizations accompanied me into the Earth material. I had spent years examining public commitments and the arrangements through which they took effect. The inquiry was familiar; the answers were not. Comparison promised clarity, but only if I followed the particulars rather than the resemblance.

Placing an arrangement beside others allowed me to ask how its specific terms served the commitment made through it. I took pleasure in having a reason to look closely. A resemblance that led only to another familiar name had done very little work.

Nor did I have a professional need for Earth to disappoint me. A provision that accomplished what it claimed would deserve an account of how it worked. Treating every public promise as a disguise would make failure the condition under which I was willing to notice anything.

Repair also gave the comparison work to do. Naming the original difficulty was only a beginning. I wanted to understand what had changed in the arrangement and what that change made possible. Getting that account right interested me more than adding another instance to an accusation I already knew how to make.

That interest returned me to the prospective life. Whatever judgment I reached, I wanted to distinguish an assurance someone had reason to depend on from one that would not bear that weight.

The Earth survey was already substantial enough for me to pursue that purpose. I had material to examine and experience I expected to make useful. I turned toward the arrangements with an interest in their particulars. I expected to understand what I was looking at.