Yeah, intertemporal trust and coordination become hugely important. Lots of ‘scalable alignment’ strategies are relevant, recursively delegating yourself tasks or summarizing your progress so far. An inhuman level of flexibility would also help, instantly grieving your old circumstances then adapting to the new ones.
Can you be confident that your past self knew what they were doing when they dropped you in this situation? Or that your future selves will develop things the way you expect them to? You could choose to deliberately and repeatedly lie to yourself. Picture Susan writing a note, “exciting new job tomorrow!”—each night realizing the truth, but deciding to enjoy her fantasy just one more day. This doesn’t have to be completely destructive though. Susan might have either internal or external thresholds, so she’ll let herself wallow in escapism for a month (or a century) but no longer than that.
Also, exomemory isn’t the only way to break the symmetry of repetition. Susan could have started each morning by flipping to a random sentence in a book, or rolling a few high-emotional-variance activity dice, etc.
Things get especially scary if you’re unsure whether your exomemory has been tampered with by somebody else. The domestic abuse here was relatively mild—Jane could have tried a hundred different times to manipulate Susan into a specific outcome. Anyone on a staggered timescale from you can attempt those kind of brute-force attacks.
Alternatively, reliable social supports who have different memory windows than you would make everything so much easier. If Susan and Jane had a better relationship with one another, they could have had a conversation like “you seem to be stuck in a rut, let’s talk this through and change something.”
However...‘reliable’ leaves a ton of messy wiggle room. Which versions of yourself are they cooperating with, which of your layered ongoing commitments do they respect? What if you ask them to keep secrets from your future iterations? Your full life is vast and ancient, your locally-available context each day is tiny and carefully curated. Part of what makes a friend different from a private notebook is that they can make independent judgements about which pieces of your past you need to be aware of today.
You can have super strong deference towards your local past selves, while still doing your own (random?) global spot-checks. Verify that page 18 of the daily dossier is factually true. Check that sub-sub-plan 5j still makes sense. Semi-regularly re-evaluate old habits, old preferences, old relationships, so that you aren’t just coasting on momentum. Project management on thousand year scales despite constantly resetting.
All of this is much, much easier to do if you prepare ahead of time, which Jane didn’t. But I agree with slimepriestess that we already kinda do this stuff in ordinary life. Decade by decade, day by day, or shorter—“redaction frequency” rhymes with “attention span” and “working memory size.”
...uhh anyways, cool story thanks lol
Update from almost 3 years in the future: this stream of work has continued developing in a few different directions. Both on the conceptual foundations, and some initial attempts to apply these tools to AI. Two recent works I was especially excited by (and their bibliographies): ‘Towards a Grounded Theory of Causation for Embodied AI’ (https://arxiv.org/abs/2206.13973, and here’s an excellent talk by the author, https://youtu.be/5mZhcXhbciE), and ‘Faithful, Interpretable Model Explanations via Causal Abstraction’ (https://ai.stanford.edu/blog/causal-abstraction/).