How the group decides, the institutions an advanced civilisation runs and how each is governed, institutions that outlive their founders, and at the far end, what not to rebuild.
Agree the rule for making decisions, before you need to make a hard one.
Needs first: nothing — start with bare hands.
Build the machinery that makes the other steps hold.
Needs first: Teach the next generation (Knowledge), Printing (Knowledge), Networks (Computing), The factory and interchangeable parts (Tools), Constraint on the ruler, Audit, statistics and the published number
Use the one genuine advantage a second attempt has: hindsight.
Needs first: Institutions that outlive people, Energy without the carbon bill (Energy), Biology as engineering (Health)
Every guide, build, reference sheet and book reached from the steps above.
Every public institution an advanced civilisation runs, in the order a rebuilding one can found them: what each is for, when it becomes possible, and the rules that keep it honest, useful and no bigger than its job.
Level 3Water in and on the ground, the air and weather, rocks and time, earthquakes and tsunamis, and the climate: each result with what it lets you do and who first found it.