Exactly. Horses are intelligent enough to understand involuntary body language, but they still can't create societies. Harari argues that this is a point in favor of the idea that communication alone is not sufficient for mass cooperation.
What about the shame that comes with missing an opportunity?
Who has been hurt: yourself, because you can't benefit from that opportunity anymore, and possibly others who also would have benefited.
What must be made right: this is where I get stuck. No future opportunity can replace the one you missed; that cost will never come back. You can you possibly repay it?
Predicting on an individual basis would be more accurate, since it's much more likely to catch edge cases and follow preference changes over time. At the same time, it's more expensive and the price scales with the size of your customer base, unlike categorization. That's probably why most businesses don't practice it. Social media algorithms use both, maybe because technologies like neural networks push the price down.
Also, in the case you gave, safety isn't being destroyed by the truth, it's being destroyed by the general public's reaction to the truth. It is pointless to give threats to anybody for a past action, so this is just another case of an irrational emotional response by the collective.
But this is an interesting case of how the pure practice of rationality can be dangerous in an irrational world: is it truly moral to pursue (and in this case, expose) the truth when you can't expect everyone else to handle or react to it properly? One possible solution could be that, by practicing rationality and truth-seeking personally, even against the common grain of society, you could be subtly influencing society in a more rational direction. Once enough people do this, it "makes the world safe for rationality" by creating a rational society where irrational emotional reactions to truth are highly discouraged. Since a rational society is more optimized, this maximizes utility in the (very) long run.
If you will keep consuming a non-expirable household item forever, and if you have plenty of free space, why don't you have a lifetime supply?
This may apply to soap, shampoo, toilet paper, detergent, paper towels, sponges, aluminum foil, trash bags, sandwich bags, most household cleaners, q-tips, rubber gloves, nails, screws, paper, matches, band-aids, light bulbs and (if these never expire) toothpaste, batteries, markers and pens, and many over-the-counter pharmaceuticals.
There are legitimate arguments against stockpiling, like ease of moving and expecting technology to improve. If you weigh these explicitly rather than just following the crowd, you're much more likely to find the optimal supply.