> the popular conception of insider trading as a problem of fairness to other traders on financial markets is misapprehended
Well, it's the legal theory underpinning insider trading laws in much (all?) of the EU.
And the US might have a different legal theory underpinning their regulations, but practically, it largely amounts to the same effect, so under POSIWID, it's questionable whether the difference matters much.
> no, it's not at all true that the only rational actors on financial markets are insiders.
Then a non-insider-trading prediction market should be possible and at least somewhat useful too, no? You'd essentially create incentives to do thorough research and analysis of public information and publish the results.
Whether it's practically possible to enforce is a different question.
Well, it's the legal theory underpinning insider trading laws in much (all?) of the EU.
And the US might have a different legal theory underpinning their regulations, but practically, it largely amounts to the same effect, so under POSIWID, it's questionable whether the difference matters much.
> no, it's not at all true that the only rational actors on financial markets are insiders.
Then a non-insider-trading prediction market should be possible and at least somewhat useful too, no? You'd essentially create incentives to do thorough research and analysis of public information and publish the results.
Whether it's practically possible to enforce is a different question.