Some possible containment procedures are as follows:
Altering the Gregorian Calendar to change Leap Day to April 1st (unknown effectiveness, could lead in transferal of the anomaly to another day)
The teaching of mind-resistance techniques in schools and workplaces, using standard cover stories (media literacy, appreciation of the arts, combating racial bias). However, this runs the risk of collapsing important delusions to the functioning of society.
Global usage of hypnotic drugs through the atmosphere, as well as using sleeper agents in the government to fast-track recognition of April 1st as a federal holiday [Denied by the Foundation Ethics committee]
Usage of these techniques could do a large part to reduce global IK-Class End of Civilization Scenarios. If you're interested in helping with anomalous existential risk, please contact the SCP Foundation outreach team. This has been brought to you as part of the SCP Foundation's partnership with the Center for Effective Altruism and organizations like 80,000 Hours.
Here are some cruxes that I don't see addressed as much:
If there is a future with sentient beings living in it, are their lives, on average, likely to be net positive or net negative?
This weighs over all existential risk cause areas. If preventing existential risk is possible, but the future is net-negative, then this intervention may be harmful, due to increasing s-risks.
How much will the governance of developed countries influence the governance of underdeveloped countries?
A country that does not value net welfare at all but instead dominance and power can transfer its values to the rest of the world through popular media and economic dependency. If this happens, it could lead to a future where coordination on issues becomes difficult, if not impossible.
What would "stalling the film" look like? And how would you avoid drawing more attention to the film by doing so?
Strong-upvoted because I think what would happen if an AI company shut down is a very under-analyzed part of the situation. If shutting down one AI company makes the other companies take more drastic action in one way or the other, it definitely makes a difference in the viability of an AI pause.