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MANIFOLD
Is there or will there be a successfully conducted "range" market on Manifold?
4
Ṁ100Ṁ254
resolved Mar 8
Resolved
YES
I believe that Manifold's resolve-to-PROB feature means that Manifold basically already has "range" markets. Like if you want to predict how much money a famous painting will sell for, to pick a random example, you can specify a range, MIN to MAX, and then resolve the market to the fraction of the way from MIN to MAX the painting sells for. Has anyone done something like that? Will they? (Of course it would be much more convenient if Manifold supported range markets directly. But it seems like they could do that with essentially a simple interface layer on what they already have.) Resolves to YES if I learn of such a market and it works correctly. Resolves to NO if such markets don't work correctly with Manifold's current market mechanism. Related: https://manifold.markets/Cyril/will-manifold-implement-range-marke @James adds: I think resolving PROB is a reasonable implementation for range. Gurkenglas commented that it doesn't allow you to bet on a specific distribution, which is true. It's implicitly something like a triangle around the current probability, where payoff declines linearly as you move away. You could imagine the payout dropping off more rapidly for a normal curve, for example. And the bug (?) that @Yev encountered was apparently not related to resolving to PROB but involved "the phantom shares" thing (?) which should supposedly not be an issue with new markets? Mar 8, 5:29pm: Discussion of the resolution: https://manifold.markets/dreev/will-all-the-no-traders-in-the-mark
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Those sure don't work correctly! We could go into DPM issues but most straightforwardly, a range market is supposed to communicate a probability distribution, which doesn't fit into one price. Free response markets have less of that issue, but those don't count for your question, right?
Perfect! Thanks, y'all! But, @Yev, you were saying in the Discord that you have an example of this not working correctly?