How many generations does a thousand-year consent bind

The options

The order shown is not a ranking of preference.

1. Option 1

   Conclude a single long agreement

   It secures continuity of the facility, but makes rejection by a changed human generation harder.

2. Option 2

   Renew on different cycles

   It reflects each side's experience of time, but non-simultaneous withdrawal and residual obligations become complex.

3. Option 3

   Maintain the facility independently

   It does not depend on the other side's speed of consent, but gives up large joint benefits.

The situation as it stands

One civilization is assumed to take a thousand years to form its intent, and humanity's representatives are assumed to change every few decades. Decision deadline: within 20 years before construction of the joint facility begins.

7,200-year future synthetic scenario · A civilization that consents in ten days and a civilization that consents in a thousand years. The events, figures, technology, and nature of the civilization are assumptions for the sake of the question, not predictions of arrival or observed facts.

1. Premise 1One civilization is assumed to take a thousand years to form its intent, and humanity's representatives are assumed to change every few decades.
2. Premise 2Building the facility together saves resources, but one side's withdrawal affects the other side's basic livelihood.
3. Premise 3Imposing the same renewal cycle either leaves one side unable to decide in time or binds several generations of the other side.

Where it holdsIntercivilizational facility agreements and renewal of consent

What is still unknown

1. Unknown 1The minimum service that must remain even after withdrawal
2. Unknown 2The confirming signal that establishes the counterpart's consent
3. Unknown 3The maximum obligation that subsequent human generations can bear

Signals to decide again

• Decide what observation, responsible party, and confirmation window will verify 「the minimum service that must remain even after withdrawal」, and rejudge if a new confirmation changes the tradeoffs among the options.
• Decide what observation, responsible party, and confirmation window will verify 「the confirming signal that establishes the counterpart's consent」, and rejudge if a new confirmation changes the tradeoffs among the options.
• Decide what observation, responsible party, and confirmation window will verify 「the maximum obligation that subsequent human generations can bear」, and rejudge if a new confirmation changes the tradeoffs among the options.