Posting this because the summary going around does not say what the paper says, and the difference matters for how people here are using it.
The trade-off is reversibility against privacy and there is no option that gives you both. Card payments are reversible and disclose the most; crypto discloses least and is irreversible, which is precisely why pressure toward it is a warning sign when it comes from a seller rather than a buyer. Escrow only means anything where the escrow agent is independent of both parties, which is rarely the case in practice.
Where I think it is weakest: the population was selected and supported in ways a real cohort is not, so I would read the effect size as a ceiling rather than an expectation.
What would genuinely help is knowing how people are thinking about the trade-off between reversibility and privacy, because you cannot have both. I would rather have one careful answer than five confident ones.
ben_calgary said:The trade-off is reversibility against privacy and there is no option that gives you both.
Correct, and worth adding that it is reversible. Nothing being described here is a one-way door, which changes how cautious it is reasonable to be.
ben_calgary said:The trade-off is reversibility against privacy and there is no option that gives you both.
Pushing back on ben_calgary here. I would resist the confidence. Half of what this board was certain about two years ago has since been quietly dropped, and nobody went back to correct the threads.
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View ResultsShort answer first, then the reasoning. Whatever the answer turns out to be, the method for getting there is the same: state the assumption, do the arithmetic in public, and invite the correction. That is slower than asserting, and it is the only version that survives being wrong.
amsterdam_pete said:Correct, and worth adding that it is reversible.
This matches mine closely enough to be worth saying so out loud.